55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae

Analysis

max time kernel
148s
max time network
123s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
20-10-2024 22:11

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General

Target

55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
Size

317KB
MD5

2f8c4529d3ea984da867d5bc3bb8c61c
SHA1

9f76eb8c2a8b4d96e1db6c7a09e29f00fe8e0cd8
SHA256

55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae
SHA512

0d74b2e6041fc84179646ededd45fb8ea094f999751de570b712dcca9add94f9ff8e30441fa3f9377376c1f44a3ddff78ecd12ec1a32d8fd3c0616e5f4305086
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\7154 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\msuoxzl.bat"	svchost.exe

Executes dropped EXE 3 IoCs

Processes:

skyrpe.exeskyrpe.exeskyrpe.exe

pid	Process
2072	skyrpe.exe
38112	skyrpe.exe
38212	skyrpe.exe

Loads dropped DLL 5 IoCs

Processes:

55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe

pid	Process
2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.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-1-5-21-3290804112-2823094203-3137964600-1000\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:

55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exeskyrpe.exe

description	pid	Process	procid_target
PID 1508 set thread context of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 2072 set thread context of 38112	2072	skyrpe.exe	37
PID 2072 set thread context of 38212	2072	skyrpe.exe	38

UPX packed file 16 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1508-0-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/1508-223-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/2992-53493-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2992-53492-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1508-53491-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/2992-53490-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2992-53485-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2992-53483-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x0037000000016d0b-53518.dat	upx
behavioral1/memory/2992-53520-0x0000000003200000-0x0000000003252000-memory.dmp	upx
behavioral1/memory/2072-53539-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/2992-53689-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2072-53694-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/2072-106977-0x0000000000400000-0x0000000000452000-memory.dmp	upx
behavioral1/memory/2992-106981-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/38112-106994-0x0000000000400000-0x000000000040B000-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\msuoxzl.bat	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:

55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.execmd.exereg.exeskyrpe.exeskyrpe.exeskyrpe.exesvchost.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

skyrpe.exe

pid	Process
38212	skyrpe.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

skyrpe.exe

pid	Process
38212	skyrpe.exe

Suspicious use of AdjustPrivilegeToken 38 IoCs

Processes:

skyrpe.exe

description	pid	Process
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe
Token: SeDebugPrivilege	38112	skyrpe.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exeskyrpe.exeskyrpe.exe

pid	Process
1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
2072	skyrpe.exe
38112	skyrpe.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.execmd.exeskyrpe.exeskyrpe.exe

description	pid	Process	procid_target
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 1508 wrote to memory of 2992	1508	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	31
PID 2992 wrote to memory of 2556	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	32
PID 2992 wrote to memory of 2556	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	32
PID 2992 wrote to memory of 2556	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	32
PID 2992 wrote to memory of 2556	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	32
PID 2556 wrote to memory of 2612	2556	cmd.exe	34
PID 2556 wrote to memory of 2612	2556	cmd.exe	34
PID 2556 wrote to memory of 2612	2556	cmd.exe	34
PID 2556 wrote to memory of 2612	2556	cmd.exe	34
PID 2992 wrote to memory of 2072	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	35
PID 2992 wrote to memory of 2072	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	35
PID 2992 wrote to memory of 2072	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	35
PID 2992 wrote to memory of 2072	2992	55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe	35
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38112	2072	skyrpe.exe	37
PID 2072 wrote to memory of 38212	2072	skyrpe.exe	38
PID 2072 wrote to memory of 38212	2072	skyrpe.exe	38
PID 2072 wrote to memory of 38212	2072	skyrpe.exe	38
PID 2072 wrote to memory of 38212	2072	skyrpe.exe	38
PID 2072 wrote to memory of 38212	2072	skyrpe.exe	38
PID 2072 wrote to memory of 38212	2072	skyrpe.exe	38
PID 2072 wrote to memory of 38212	2072	skyrpe.exe	38
PID 38212 wrote to memory of 38296	38212	skyrpe.exe	39
PID 38212 wrote to memory of 38296	38212	skyrpe.exe	39
PID 38212 wrote to memory of 38296	38212	skyrpe.exe	39
PID 38212 wrote to memory of 38296	38212	skyrpe.exe	39

C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
"C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1508
- C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
  "C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\QWNLP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2556
  - - 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:2612
- - 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:2072
  - - 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:38112
  - - 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:38212
    - - 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:38296

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\QWNLP.bat

Filesize
139B

MD5
0654f004b2e314bad7f75867e91da37d

SHA1
4232c22e7340b12108d86e3cb35ed288a3dbc7f1

SHA256
ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

SHA512
dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

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

Filesize
317KB

MD5
4684987509c11c49b259045c34354440

SHA1
ebd303d7297bb30287a77382d41880f73b483413

SHA256
d768d90fb6869f5a9fffacd4dfcae9f7ac2ce6928a05e1be8e37dfbab3043773

SHA512
1eedc080311fc9526e9532e11c72e563e62b9c079657b43f3191a004b4df1d6ebbab116855739e356208659bbe983a2594e26ec47c076bd8d4db89f87b0808cc

Download Submit
memory/1508-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1508-67-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1508-223-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1508-53491-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1508-0-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/1508-53489-0x0000000001F30000-0x0000000001F82000-memory.dmp

Filesize
328KB

Download
memory/2072-106977-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2072-53694-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2072-53539-0x0000000000400000-0x0000000000452000-memory.dmp

Filesize
328KB

Download
memory/2992-53490-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2992-53689-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2992-53483-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2992-53485-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2992-53520-0x0000000003200000-0x0000000003252000-memory.dmp

Filesize
328KB

Download
memory/2992-53536-0x0000000003210000-0x0000000003262000-memory.dmp

Filesize
328KB

Download
memory/2992-53487-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2992-53535-0x0000000003210000-0x0000000003262000-memory.dmp

Filesize
328KB

Download
memory/2992-53534-0x0000000003210000-0x0000000003262000-memory.dmp

Filesize
328KB

Download
memory/2992-53481-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2992-53690-0x0000000003200000-0x0000000003252000-memory.dmp

Filesize
328KB

Download
memory/2992-53691-0x0000000003210000-0x0000000003262000-memory.dmp

Filesize
328KB

Download
memory/2992-53693-0x0000000003210000-0x0000000003262000-memory.dmp

Filesize
328KB

Download
memory/2992-53492-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2992-106981-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2992-53493-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/38112-106994-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/38212-106975-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/38212-106986-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download