darkcomet | 3a22773a05dad02a825e6891e5ad6e7ad8b3bd1e6dadbc2d74b126be98a67c28

Analysis

max time kernel
144s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
18-04-2024 15:49

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General

Target

f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe
Size

1.3MB
MD5

f850a39e38c3e6d21d7b2b628333020a
SHA1

40cc05b05ac2f4afc74a0c7f7637b7f959b1f9ec
SHA256

3a22773a05dad02a825e6891e5ad6e7ad8b3bd1e6dadbc2d74b126be98a67c28
SHA512

a77cb4ada2307eba4c4168fdea6bbe847b5fbdf015b8a8cf016f513073fa5fba502a08d1aeb88acfbf958dae9c9d91c2276f876dd8171201a4f06a589339b357
SSDEEP

12288:KLeLCFLSBHiQKQZ1mDNjZia2zZJ47v6es/OOKEqO0jWVKebcIu8g3zMBYjtZK9+O:

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

6.tcp.ngrok.io:14681

Mutex

DC_MUTEX-ZR9SX0Q

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
oMes1KRz6u7t
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

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:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	TWPH..exe

Windows security bypass 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Executes dropped EXE 2 IoCs

pid	Process
3004	TWPH..exe
2724	msdcsc.exe

Loads dropped DLL 4 IoCs

pid	Process
1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe
1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe
3004	TWPH..exe
3004	TWPH..exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000b00000001507e-3.dat	upx
behavioral1/memory/1504-9-0x0000000004F40000-0x0000000004FF7000-memory.dmp	upx
behavioral1/memory/3004-11-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3004-19-0x0000000004F90000-0x0000000005047000-memory.dmp	upx
behavioral1/memory/2724-29-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/3004-30-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2724-33-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2724-36-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2724-38-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Windows security modification 2 TTPs 2 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	msdcsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3787592910-3720486031-2929222812-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\ProgramData\\Microsoft\\Windows\\Start Menu\\MSDCSC\\msdcsc.exe"	TWPH..exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
2	6.tcp.ngrok.io
15	6.tcp.ngrok.io
42	6.tcp.ngrok.io
81	6.tcp.ngrok.io

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2596	1504	WerFault.exe	27

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2724	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	3004	TWPH..exe
Token: SeSecurityPrivilege	3004	TWPH..exe
Token: SeTakeOwnershipPrivilege	3004	TWPH..exe
Token: SeLoadDriverPrivilege	3004	TWPH..exe
Token: SeSystemProfilePrivilege	3004	TWPH..exe
Token: SeSystemtimePrivilege	3004	TWPH..exe
Token: SeProfSingleProcessPrivilege	3004	TWPH..exe
Token: SeIncBasePriorityPrivilege	3004	TWPH..exe
Token: SeCreatePagefilePrivilege	3004	TWPH..exe
Token: SeBackupPrivilege	3004	TWPH..exe
Token: SeRestorePrivilege	3004	TWPH..exe
Token: SeShutdownPrivilege	3004	TWPH..exe
Token: SeDebugPrivilege	3004	TWPH..exe
Token: SeSystemEnvironmentPrivilege	3004	TWPH..exe
Token: SeChangeNotifyPrivilege	3004	TWPH..exe
Token: SeRemoteShutdownPrivilege	3004	TWPH..exe
Token: SeUndockPrivilege	3004	TWPH..exe
Token: SeManageVolumePrivilege	3004	TWPH..exe
Token: SeImpersonatePrivilege	3004	TWPH..exe
Token: SeCreateGlobalPrivilege	3004	TWPH..exe
Token: 33	3004	TWPH..exe
Token: 34	3004	TWPH..exe
Token: 35	3004	TWPH..exe
Token: SeIncreaseQuotaPrivilege	2724	msdcsc.exe
Token: SeSecurityPrivilege	2724	msdcsc.exe
Token: SeTakeOwnershipPrivilege	2724	msdcsc.exe
Token: SeLoadDriverPrivilege	2724	msdcsc.exe
Token: SeSystemProfilePrivilege	2724	msdcsc.exe
Token: SeSystemtimePrivilege	2724	msdcsc.exe
Token: SeProfSingleProcessPrivilege	2724	msdcsc.exe
Token: SeIncBasePriorityPrivilege	2724	msdcsc.exe
Token: SeCreatePagefilePrivilege	2724	msdcsc.exe
Token: SeBackupPrivilege	2724	msdcsc.exe
Token: SeRestorePrivilege	2724	msdcsc.exe
Token: SeShutdownPrivilege	2724	msdcsc.exe
Token: SeDebugPrivilege	2724	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	2724	msdcsc.exe
Token: SeChangeNotifyPrivilege	2724	msdcsc.exe
Token: SeRemoteShutdownPrivilege	2724	msdcsc.exe
Token: SeUndockPrivilege	2724	msdcsc.exe
Token: SeManageVolumePrivilege	2724	msdcsc.exe
Token: SeImpersonatePrivilege	2724	msdcsc.exe
Token: SeCreateGlobalPrivilege	2724	msdcsc.exe
Token: 33	2724	msdcsc.exe
Token: 34	2724	msdcsc.exe
Token: 35	2724	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2724	msdcsc.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 3004	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	28
PID 1504 wrote to memory of 3004	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	28
PID 1504 wrote to memory of 3004	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	28
PID 1504 wrote to memory of 3004	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	28
PID 1504 wrote to memory of 2596	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	29
PID 1504 wrote to memory of 2596	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	29
PID 1504 wrote to memory of 2596	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	29
PID 1504 wrote to memory of 2596	1504	f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe	29
PID 3004 wrote to memory of 2724	3004	TWPH..exe	30
PID 3004 wrote to memory of 2724	3004	TWPH..exe	30
PID 3004 wrote to memory of 2724	3004	TWPH..exe	30
PID 3004 wrote to memory of 2724	3004	TWPH..exe	30

C:\Users\Admin\AppData\Local\Temp\f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f850a39e38c3e6d21d7b2b628333020a_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\TWPH..exe
  "C:\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\TWPH..exe"
  2⤵
  - Modifies WinLogon for persistence
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3004
- - C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe
    "C:\ProgramData\Microsoft\Windows\Start Menu\MSDCSC\msdcsc.exe"
    3⤵
    - Windows security bypass
    - Disables RegEdit via registry modification
    - Executes dropped EXE
    - Windows security modification
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1504 -s 908
  2⤵
  - Program crash
  PID:2596

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

Impair Defenses

T1562

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\TWPH..exe

Filesize
251KB

MD5
a542755854f940253e449ce4b425cdd0

SHA1
600bd1c852a10f33df7711d5c1c29049bada4640

SHA256
890a30612c41a78eb4781d6278ea4f636d5ecf55343c5fbd87a1cf064104bcdc

SHA512
754f18537de765752afed8dc003c94df163d81f4c4ec6005a4021bbea6ec0989935f398faf94945d875170c50156e1901723f1988c78c907ce66cb93ef47c24f

Download Submit
memory/1504-0-0x0000000000030000-0x0000000000186000-memory.dmp

Filesize
1.3MB

Download
memory/1504-1-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download
memory/1504-9-0x0000000004F40000-0x0000000004FF7000-memory.dmp

Filesize
732KB

Download
memory/1504-34-0x0000000004F40000-0x0000000004FF7000-memory.dmp

Filesize
732KB

Download
memory/1504-32-0x0000000004F40000-0x0000000004FF7000-memory.dmp

Filesize
732KB

Download
memory/1504-31-0x0000000074D80000-0x000000007546E000-memory.dmp

Filesize
6.9MB

Download
memory/2724-29-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2724-27-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2724-33-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2724-36-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2724-38-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3004-25-0x0000000004F90000-0x0000000005047000-memory.dmp

Filesize
732KB

Download
memory/3004-30-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/3004-19-0x0000000004F90000-0x0000000005047000-memory.dmp

Filesize
732KB

Download
memory/3004-13-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/3004-11-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads