033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b

Analysis

max time kernel
148s
max time network
122s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-10-2024 19:14

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General

Target

033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
Size

317KB
MD5

245a2e25ceee91882dfd792513954996
SHA1

64df29a6bee5855e33f548ce2c2a906c7423cec1
SHA256

033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b
SHA512

66f5647c6d11524b380719bc8d272d4ab898ff6b5bb152747f67d2cfeb961ed7ef08ee22bbded64b86055ef8e033a9913e2430f79c5d18ff3a545ef156809797
SSDEEP

3072:vSQ0EWVwZhKxC5Rt+k60Zh+qw6PYSsszfHZTZJ2lbaV2:vPA6wxmuJspr2lb6

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\51491 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\msurhy.exe"	svchost.exe

Executes dropped EXE 3 IoCs

Processes:

skyrpe.exeskyrpe.exeskyrpe.exe

pid	Process
19052	skyrpe.exe
45868	skyrpe.exe
172084	skyrpe.exe

Loads dropped DLL 5 IoCs

Processes:

033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe

pid	Process
19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\Skype = "C:\\Users\\Admin\\AppData\\Roaming\\skype\\skyrpe.exe"	reg.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

skyrpe.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\disk\enum	skyrpe.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	skyrpe.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exeskyrpe.exe

description	pid	Process	procid_target
PID 2380 set thread context of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 19052 set thread context of 45868	19052	skyrpe.exe	35
PID 19052 set thread context of 172084	19052	skyrpe.exe	36

UPX packed file 16 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2380-0-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/2380-223-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/19268-53488-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/19268-53483-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2380-53493-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/19268-53492-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/19268-53491-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/19268-53485-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x000a000000015cdb-53518.dat	upx
behavioral1/memory/19268-53520-0x0000000003170000-0x00000000031C2000-memory.dmp	upx
behavioral1/memory/19268-53687-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/19052-53692-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/45868-106973-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/19052-106979-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/19268-106982-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/45868-106993-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

Processes:

svchost.exe

description	ioc	Process
File created	C:\PROGRA~3\LOCALS~1\Temp\msurhy.exe	svchost.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

svchost.exe033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.execmd.exereg.exeskyrpe.exeskyrpe.exeskyrpe.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skyrpe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skyrpe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skyrpe.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

skyrpe.exe

pid	Process
172084	skyrpe.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

skyrpe.exe

pid	Process
172084	skyrpe.exe

Suspicious use of AdjustPrivilegeToken 43 IoCs

Processes:

skyrpe.exe

description	pid	Process
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe
Token: SeDebugPrivilege	45868	skyrpe.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exeskyrpe.exeskyrpe.exe

pid	Process
2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
19052	skyrpe.exe
45868	skyrpe.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.execmd.exeskyrpe.exeskyrpe.exe

description	pid	Process	procid_target
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 2380 wrote to memory of 19268	2380	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	30
PID 19268 wrote to memory of 19128	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	31
PID 19268 wrote to memory of 19128	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	31
PID 19268 wrote to memory of 19128	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	31
PID 19268 wrote to memory of 19128	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	31
PID 19128 wrote to memory of 19076	19128	cmd.exe	33
PID 19128 wrote to memory of 19076	19128	cmd.exe	33
PID 19128 wrote to memory of 19076	19128	cmd.exe	33
PID 19128 wrote to memory of 19076	19128	cmd.exe	33
PID 19268 wrote to memory of 19052	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	34
PID 19268 wrote to memory of 19052	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	34
PID 19268 wrote to memory of 19052	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	34
PID 19268 wrote to memory of 19052	19268	033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe	34
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 45868	19052	skyrpe.exe	35
PID 19052 wrote to memory of 172084	19052	skyrpe.exe	36
PID 19052 wrote to memory of 172084	19052	skyrpe.exe	36
PID 19052 wrote to memory of 172084	19052	skyrpe.exe	36
PID 19052 wrote to memory of 172084	19052	skyrpe.exe	36
PID 19052 wrote to memory of 172084	19052	skyrpe.exe	36
PID 19052 wrote to memory of 172084	19052	skyrpe.exe	36
PID 19052 wrote to memory of 172084	19052	skyrpe.exe	36
PID 172084 wrote to memory of 172200	172084	skyrpe.exe	37
PID 172084 wrote to memory of 172200	172084	skyrpe.exe	37
PID 172084 wrote to memory of 172200	172084	skyrpe.exe	37
PID 172084 wrote to memory of 172200	172084	skyrpe.exe	37

C:\Users\Admin\AppData\Local\Temp\033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
"C:\Users\Admin\AppData\Local\Temp\033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe
  "C:\Users\Admin\AppData\Local\Temp\033fffb60051effbc3f76ff0ce33c3ea11c757af83fcaa21f75485aabd912e0b.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:19268
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\QDFAA.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:19128
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Skype" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:19076
- - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
    "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:19052
  - - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
      "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:45868
  - - C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
      "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
      4⤵
      Executes dropped EXE
      Maps connected drives based on registry
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of WriteProcessMemory
      PID:172084
    - - C:\Windows\syswow64\svchost.exe
        
        C:\Windows\syswow64\svchost.exe
        5⤵
        Adds policy Run key to start application
        Drops file in Program Files directory
        System Location Discovery: System Language Discovery
        
        PID:172200

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\QDFAA.bat

Filesize
139B

MD5
0654f004b2e314bad7f75867e91da37d

SHA1
4232c22e7340b12108d86e3cb35ed288a3dbc7f1

SHA256
ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

SHA512
dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

Download Submit
\Users\Admin\AppData\Roaming\skype\skyrpe.exe

Filesize
317KB

MD5
33718981641c5385370e30b22369cb9e

SHA1
0e912001dcdbeb488ab8d7c67a0414aba0786436

SHA256
fbe15d199c7d52201b16d381c53e568d9dc0d6bb8c29509fcdf34da61a6f72f7

SHA512
2e08b328effcb7d18f53355c6a1a2ba500065b4459013467cdc23fbec65cd646ec5b00c513f2ad913ab9019bd34ad7321e844371d4735064c34b41b39f4e81fd

Download Submit
memory/2380-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2380-65-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2380-223-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2380-53493-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2380-0-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2380-53489-0x0000000000510000-0x0000000000562000-memory.dmp

Filesize
328KB

Download
memory/19052-106979-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/19052-53692-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/19268-53492-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/19268-53688-0x0000000003170000-0x00000000031C2000-memory.dmp

Filesize
328KB

Download
memory/19268-53485-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/19268-53481-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/19268-53491-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/19268-53534-0x0000000003170000-0x00000000031C2000-memory.dmp

Filesize
328KB

Download
memory/19268-53520-0x0000000003170000-0x00000000031C2000-memory.dmp

Filesize
328KB

Download
memory/19268-53533-0x0000000003170000-0x00000000031C2000-memory.dmp

Filesize
328KB

Download
memory/19268-53687-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/19268-53487-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/19268-53690-0x0000000003170000-0x00000000031C2000-memory.dmp

Filesize
328KB

Download
memory/19268-53689-0x0000000003170000-0x00000000031C2000-memory.dmp

Filesize
328KB

Download
memory/19268-53483-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/19268-106982-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/19268-53488-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/45868-106973-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/45868-106993-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/172084-106978-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/172084-106985-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download