darkcomet | c37f15a3cfe8fd09c43d542117b650d202a86cd95b0dec645c943f8a8ed5208e

Analysis

max time kernel
150s
max time network
120s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-12-2024 06:57

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General

Target

e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
Size

808KB
MD5

e5379715dd0f4de193007edcd19852dd
SHA1

489920ca30cc192d100f7c0fe96933ff0760ba11
SHA256

c37f15a3cfe8fd09c43d542117b650d202a86cd95b0dec645c943f8a8ed5208e
SHA512

16f952c5ada2f2c2085b5e89bd61b95b9258f4b503618c37d1f91724a4d6bfddfc468fa3b58a987b28bd19218b2747a0bdb5d06a16c2c1a78dca74b21a4dea9b
SSDEEP

24576:VQ2JWUJsF1zwstoajoZ3pbst90tmTnF9Tx:ruFSsHjk5bK7XTx

Score

10^/10

darkcomet guest16 discovery evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

piwas12.no-ip.org:1604

Mutex

DC_MUTEX-VRNRLEB

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
gZnZNxWUT9Vy
install
true
offline_keylogger
true
persistence
false
reg_key
MicroUpdate

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	cvtres.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
2628	attrib.exe
2652	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2316	msdcsc.exe

Loads dropped DLL 1 IoCs

pid	Process
2140	cvtres.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	cvtres.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe"	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe	attrib.exe
File opened for modification	C:\Windows\Microsoft.NET\Framework\v2.0.50727	attrib.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeDebugPrivilege	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2140	cvtres.exe
Token: SeSecurityPrivilege	2140	cvtres.exe
Token: SeTakeOwnershipPrivilege	2140	cvtres.exe
Token: SeLoadDriverPrivilege	2140	cvtres.exe
Token: SeSystemProfilePrivilege	2140	cvtres.exe
Token: SeSystemtimePrivilege	2140	cvtres.exe
Token: SeProfSingleProcessPrivilege	2140	cvtres.exe
Token: SeIncBasePriorityPrivilege	2140	cvtres.exe
Token: SeCreatePagefilePrivilege	2140	cvtres.exe
Token: SeBackupPrivilege	2140	cvtres.exe
Token: SeRestorePrivilege	2140	cvtres.exe
Token: SeShutdownPrivilege	2140	cvtres.exe
Token: SeDebugPrivilege	2140	cvtres.exe
Token: SeSystemEnvironmentPrivilege	2140	cvtres.exe
Token: SeChangeNotifyPrivilege	2140	cvtres.exe
Token: SeRemoteShutdownPrivilege	2140	cvtres.exe
Token: SeUndockPrivilege	2140	cvtres.exe
Token: SeManageVolumePrivilege	2140	cvtres.exe
Token: SeImpersonatePrivilege	2140	cvtres.exe
Token: SeCreateGlobalPrivilege	2140	cvtres.exe
Token: 33	2140	cvtres.exe
Token: 34	2140	cvtres.exe
Token: 35	2140	cvtres.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2792 wrote to memory of 2140	2792	e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe	30
PID 2140 wrote to memory of 2632	2140	cvtres.exe	31
PID 2140 wrote to memory of 2632	2140	cvtres.exe	31
PID 2140 wrote to memory of 2632	2140	cvtres.exe	31
PID 2140 wrote to memory of 2632	2140	cvtres.exe	31
PID 2140 wrote to memory of 2692	2140	cvtres.exe	32
PID 2140 wrote to memory of 2692	2140	cvtres.exe	32
PID 2140 wrote to memory of 2692	2140	cvtres.exe	32
PID 2140 wrote to memory of 2692	2140	cvtres.exe	32
PID 2632 wrote to memory of 2628	2632	cmd.exe	35
PID 2632 wrote to memory of 2628	2632	cmd.exe	35
PID 2632 wrote to memory of 2628	2632	cmd.exe	35
PID 2632 wrote to memory of 2628	2632	cmd.exe	35
PID 2692 wrote to memory of 2652	2692	cmd.exe	36
PID 2692 wrote to memory of 2652	2692	cmd.exe	36
PID 2692 wrote to memory of 2652	2692	cmd.exe	36
PID 2692 wrote to memory of 2652	2692	cmd.exe	36
PID 2140 wrote to memory of 2316	2140	cvtres.exe	37
PID 2140 wrote to memory of 2316	2140	cvtres.exe	37
PID 2140 wrote to memory of 2316	2140	cvtres.exe	37
PID 2140 wrote to memory of 2316	2140	cvtres.exe	37

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
2628	attrib.exe
2652	attrib.exe

C:\Users\Admin\AppData\Local\Temp\e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e5379715dd0f4de193007edcd19852dd_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe
  2⤵
  - Modifies WinLogon for persistence
  - Loads dropped DLL
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2140
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2632
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727\cvtres.exe" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2628
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /k attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2692
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Windows\Microsoft.NET\Framework\v2.0.50727" +s +h
      4⤵
      Sets file to hidden
      Drops file in Windows directory
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:2652
- - C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:2316

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

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe

Filesize
31KB

MD5
ed797d8dc2c92401985d162e42ffa450

SHA1
0f02fc517c7facc4baefde4fe9467fb6488ebabe

SHA256
b746362010a101cb5931bc066f0f4d3fc740c02a68c1f37fc3c8e6c87fd7cb1e

SHA512
e831a6ff987f3ef29982da16afad06938b68eddd43c234ba88d1c96a1b5547f2284baf35cbb3a5bfd75e7f0445d14daa014e0ba00b4db72c67f83f0a314c80c2

Download Submit
memory/2140-12-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-29-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-4-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-11-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-18-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-17-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2140-9-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-13-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-21-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-14-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-8-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-6-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-19-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2140-20-0x0000000000400000-0x00000000004B6000-memory.dmp

Filesize
728KB

Download
memory/2792-2-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-1-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-0-0x00000000747F1000-0x00000000747F2000-memory.dmp

Filesize
4KB

Download
memory/2792-31-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download
memory/2792-32-0x00000000747F0000-0x0000000074D9B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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