darkcomet | d8921998e196dead7ac38e135f96d4e25179b6cf5f14ae1e95859fbc808d93dd

Analysis

max time kernel
144s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-10-2024 08:34

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General

Target

73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Size

251KB
MD5

73018a1aa0b4d66d12ee4ff787661ec8
SHA1

f9cfdad26472b08d7d70fdb72a25069b37f879e9
SHA256

d8921998e196dead7ac38e135f96d4e25179b6cf5f14ae1e95859fbc808d93dd
SHA512

68f80ce40e5c932b0d0c52e656e2b9ea0d5528242e3624c9f0baf7384d73779f30bbca46e535c564f7fd6a5aea03a093a3b745f299aa17017737a2b3bf65260d
SSDEEP

6144:QcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37b:QcW7KEZlPzCy37

Score

10^/10

darkcomet us discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

199.217.119.58:5730

Mutex

DC_MUTEX-B4KEQ1P

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
lM7FNnVLabB9
install
true
offline_keylogger
true
password
geli9988
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

Processes:

73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

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"	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.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

Processes:

attrib.exeattrib.exe

pid	Process
3228	attrib.exe
2876	attrib.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid	Process
4456	notepad.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid	Process
4984	msdcsc.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

UPX packed file 8 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1632-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x0007000000023ce4-7.dat	upx
behavioral2/memory/1632-64-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4984-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4984-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4984-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4984-72-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/4984-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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 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

Processes:

notepad.execmd.execmd.exeattrib.exeattrib.exemsdcsc.exe73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

Modifies registry class 1 IoCs

Processes:

73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

msdcsc.exe

pid	Process
4984	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exemsdcsc.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeSecurityPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeSystemtimePrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeBackupPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeRestorePrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeShutdownPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeDebugPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeUndockPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeManageVolumePrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeImpersonatePrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: 33	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: 34	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: 35	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: 36	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	4984	msdcsc.exe
Token: SeSecurityPrivilege	4984	msdcsc.exe
Token: SeTakeOwnershipPrivilege	4984	msdcsc.exe
Token: SeLoadDriverPrivilege	4984	msdcsc.exe
Token: SeSystemProfilePrivilege	4984	msdcsc.exe
Token: SeSystemtimePrivilege	4984	msdcsc.exe
Token: SeProfSingleProcessPrivilege	4984	msdcsc.exe
Token: SeIncBasePriorityPrivilege	4984	msdcsc.exe
Token: SeCreatePagefilePrivilege	4984	msdcsc.exe
Token: SeBackupPrivilege	4984	msdcsc.exe
Token: SeRestorePrivilege	4984	msdcsc.exe
Token: SeShutdownPrivilege	4984	msdcsc.exe
Token: SeDebugPrivilege	4984	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	4984	msdcsc.exe
Token: SeChangeNotifyPrivilege	4984	msdcsc.exe
Token: SeRemoteShutdownPrivilege	4984	msdcsc.exe
Token: SeUndockPrivilege	4984	msdcsc.exe
Token: SeManageVolumePrivilege	4984	msdcsc.exe
Token: SeImpersonatePrivilege	4984	msdcsc.exe
Token: SeCreateGlobalPrivilege	4984	msdcsc.exe
Token: 33	4984	msdcsc.exe
Token: 34	4984	msdcsc.exe
Token: 35	4984	msdcsc.exe
Token: 36	4984	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

msdcsc.exe

pid	Process
4984	msdcsc.exe

Suspicious use of WriteProcessMemory 32 IoCs

Processes:

73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.execmd.execmd.exe

description	pid	Process	procid_target
PID 1632 wrote to memory of 1652	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	86
PID 1632 wrote to memory of 1652	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	86
PID 1632 wrote to memory of 1652	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	86
PID 1632 wrote to memory of 3176	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	87
PID 1632 wrote to memory of 3176	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	87
PID 1632 wrote to memory of 3176	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	87
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1632 wrote to memory of 4456	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	89
PID 1652 wrote to memory of 3228	1652	cmd.exe	91
PID 1652 wrote to memory of 3228	1652	cmd.exe	91
PID 1652 wrote to memory of 3228	1652	cmd.exe	91
PID 3176 wrote to memory of 2876	3176	cmd.exe	92
PID 3176 wrote to memory of 2876	3176	cmd.exe	92
PID 3176 wrote to memory of 2876	3176	cmd.exe	92
PID 1632 wrote to memory of 4984	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	94
PID 1632 wrote to memory of 4984	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	94
PID 1632 wrote to memory of 4984	1632	73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe	94

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Processes:

attrib.exeattrib.exe

pid	Process
3228	attrib.exe
2876	attrib.exe

C:\Users\Admin\AppData\Local\Temp\73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\73018a1aa0b4d66d12ee4ff787661ec8_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3176
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2876
- C:\Windows\SysWOW64\notepad.exe
  notepad
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4456
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:4984

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

Query Registry

T1012

System Information Discovery

T1082

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
251KB

MD5
73018a1aa0b4d66d12ee4ff787661ec8

SHA1
f9cfdad26472b08d7d70fdb72a25069b37f879e9

SHA256
d8921998e196dead7ac38e135f96d4e25179b6cf5f14ae1e95859fbc808d93dd

SHA512
68f80ce40e5c932b0d0c52e656e2b9ea0d5528242e3624c9f0baf7384d73779f30bbca46e535c564f7fd6a5aea03a093a3b745f299aa17017737a2b3bf65260d

Download Submit
memory/1632-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/1632-1-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

Filesize
4KB

Download
memory/1632-64-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4456-5-0x0000000000E00000-0x0000000000E01000-memory.dmp

Filesize
4KB

Download
memory/4984-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4984-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4984-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4984-72-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4984-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download