ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2be

Analysis

max time kernel
119s
max time network
107s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
30-10-2024 12:16

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General

Target

ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
Size

284KB
MD5

2950069e06087f9cb361bae5796a2be0
SHA1

f4c66734e30a640d28446c8c14918eef203a785c
SHA256

ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2be
SHA512

8bbf6ec202dae7d8cb7e4f30545d8c38a96ee2f8d47ddd85f50bc9d45bbfed6c7ed27ccf545cf85efc6982f25f8707f497da55d0c7bc19a7931646b5b6dcf07e
SSDEEP

3072:mSQ0EWVwZhKxC5Rt+k60Zh+qw6PYSsszfHZTZJ2lC9:mPA6wxmuJspr2la

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\57591 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\mscejv.exe"	svchost.exe

Executes dropped EXE 3 IoCs

Processes:

skyrpe.exeskyrpe.exeskyrpe.exe

pid	Process
9500	skyrpe.exe
52236	skyrpe.exe
52540	skyrpe.exe

Loads dropped DLL 5 IoCs

Processes:

ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe

pid	Process
12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.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-1-5-21-4177215427-74451935-3209572229-1000\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:

ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exeskyrpe.exe

description	pid	Process	procid_target
PID 2348 set thread context of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 9500 set thread context of 52236	9500	skyrpe.exe	36
PID 9500 set thread context of 52540	9500	skyrpe.exe	37

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/12136-53488-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/12136-53487-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/12136-53486-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/12136-53483-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/12136-53481-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/12136-53679-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/12136-106967-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/52236-106977-0x0000000000400000-0x000000000040B000-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\mscejv.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:

ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.execmd.exereg.exeskyrpe.exeskyrpe.exeskyrpe.exesvchost.exeec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

skyrpe.exe

pid	Process
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe
52540	skyrpe.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

skyrpe.exe

pid	Process
52540	skyrpe.exe

Suspicious use of AdjustPrivilegeToken 18 IoCs

Processes:

skyrpe.exe

description	pid	Process
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe
Token: SeDebugPrivilege	52236	skyrpe.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exeec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exeskyrpe.exeskyrpe.exe

pid	Process
2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
9500	skyrpe.exe
52236	skyrpe.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exeec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.execmd.exeskyrpe.exeskyrpe.exe

description	pid	Process	procid_target
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 2348 wrote to memory of 12136	2348	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	31
PID 12136 wrote to memory of 12264	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	32
PID 12136 wrote to memory of 12264	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	32
PID 12136 wrote to memory of 12264	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	32
PID 12136 wrote to memory of 12264	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	32
PID 12264 wrote to memory of 11360	12264	cmd.exe	34
PID 12264 wrote to memory of 11360	12264	cmd.exe	34
PID 12264 wrote to memory of 11360	12264	cmd.exe	34
PID 12264 wrote to memory of 11360	12264	cmd.exe	34
PID 12136 wrote to memory of 9500	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	35
PID 12136 wrote to memory of 9500	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	35
PID 12136 wrote to memory of 9500	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	35
PID 12136 wrote to memory of 9500	12136	ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe	35
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52236	9500	skyrpe.exe	36
PID 9500 wrote to memory of 52540	9500	skyrpe.exe	37
PID 9500 wrote to memory of 52540	9500	skyrpe.exe	37
PID 9500 wrote to memory of 52540	9500	skyrpe.exe	37
PID 9500 wrote to memory of 52540	9500	skyrpe.exe	37
PID 9500 wrote to memory of 52540	9500	skyrpe.exe	37
PID 9500 wrote to memory of 52540	9500	skyrpe.exe	37
PID 9500 wrote to memory of 52540	9500	skyrpe.exe	37
PID 52540 wrote to memory of 52664	52540	skyrpe.exe	38
PID 52540 wrote to memory of 52664	52540	skyrpe.exe	38
PID 52540 wrote to memory of 52664	52540	skyrpe.exe	38
PID 52540 wrote to memory of 52664	52540	skyrpe.exe	38

C:\Users\Admin\AppData\Local\Temp\ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
"C:\Users\Admin\AppData\Local\Temp\ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Users\Admin\AppData\Local\Temp\ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe
  "C:\Users\Admin\AppData\Local\Temp\ec4db2615ebd67b687a66376bdb2e463879615df1b28244b6988512a5f5bb2beN.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:12136
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\DMWUE.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:12264
  - - 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:11360
- - 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:9500
  - - 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:52236
  - - 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:52540
    - - 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:52664

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\DMWUE.bat

Filesize
139B

MD5
0654f004b2e314bad7f75867e91da37d

SHA1
4232c22e7340b12108d86e3cb35ed288a3dbc7f1

SHA256
ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

SHA512
dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

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

Filesize
284KB

MD5
65c2c0b3b4dde52c9b71e522cd98f25f

SHA1
084f73d7449c909a439c0364369ae4ba69c5c1da

SHA256
0275e2d6bf8ec38751b7dab50af5906edb332e8d84e73580d12c48a1c7e0cf45

SHA512
9b69472edf9700325e321750150d3b5af97bf3c63ffe58c2ef47e69bf9901afebbf71c5a493b0a10ebeeefb40c252a22c0d5dc165767394fc11c5121d48649bf

Download Submit
memory/2348-2-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/12136-53486-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/12136-53485-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/12136-53483-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/12136-53481-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/12136-53479-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/12136-53487-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/12136-53488-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/12136-53679-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/12136-106967-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/52236-106977-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/52540-106962-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download
memory/52540-106970-0x0000000000400000-0x0000000000405000-memory.dmp

Filesize
20KB

Download