darkcomet | 831e0c164298c0335e968e6aa43f0f6d2f145d54ff0ece88a5c8ff697b9ba082

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 05:52

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General

Target

330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Size

252KB
MD5

330ccba4a7ebf89c3f94b8c5ca9aa60f
SHA1

00997a2cd5afcfad10383d64de7b080537cfc463
SHA256

831e0c164298c0335e968e6aa43f0f6d2f145d54ff0ece88a5c8ff697b9ba082
SHA512

a47dad8c0433aa631238b8c9eaa5e2eef5442cb377fc08333a3b66443d2163d13ee9a40f45b2ecc47be33b681578aa93d96d220a6b21263aec3ab64b14a07357
SSDEEP

6144:PcNYk1yuwEDBum3qYWnl0pd0EX3Zq2b6wfIDYm0PHQEJdb:PcWkbgTYWnYnt/IDYhPRd

Score

10^/10

darkcomet guest16 evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

127.0.0.1:8888

Mutex

DC_MUTEX-3X4JR93

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
oFinH4tKuPGN
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:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe

Modifies firewall policy service 2 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	msdcsc.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	msdcsc.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	msdcsc.exe

Disables Task Manager via registry modification
evasion

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
4444	attrib.exe
2300	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
452	msdcsc.exe

UPX packed file 15 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2028-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/files/0x0007000000023407-6.dat	upx
behavioral2/memory/452-62-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/2028-66-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-67-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-68-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-69-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-70-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-73-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-74-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-75-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-76-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-77-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-79-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/452-81-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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-1-5-21-1162180587-977231257-2194346871-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
452	msdcsc.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeSecurityPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeBackupPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeRestorePrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeShutdownPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeDebugPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeUndockPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: 33	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: 34	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: 35	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: 36	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	452	msdcsc.exe
Token: SeSecurityPrivilege	452	msdcsc.exe
Token: SeTakeOwnershipPrivilege	452	msdcsc.exe
Token: SeLoadDriverPrivilege	452	msdcsc.exe
Token: SeSystemProfilePrivilege	452	msdcsc.exe
Token: SeSystemtimePrivilege	452	msdcsc.exe
Token: SeProfSingleProcessPrivilege	452	msdcsc.exe
Token: SeIncBasePriorityPrivilege	452	msdcsc.exe
Token: SeCreatePagefilePrivilege	452	msdcsc.exe
Token: SeBackupPrivilege	452	msdcsc.exe
Token: SeRestorePrivilege	452	msdcsc.exe
Token: SeShutdownPrivilege	452	msdcsc.exe
Token: SeDebugPrivilege	452	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	452	msdcsc.exe
Token: SeChangeNotifyPrivilege	452	msdcsc.exe
Token: SeRemoteShutdownPrivilege	452	msdcsc.exe
Token: SeUndockPrivilege	452	msdcsc.exe
Token: SeManageVolumePrivilege	452	msdcsc.exe
Token: SeImpersonatePrivilege	452	msdcsc.exe
Token: SeCreateGlobalPrivilege	452	msdcsc.exe
Token: 33	452	msdcsc.exe
Token: 34	452	msdcsc.exe
Token: 35	452	msdcsc.exe
Token: 36	452	msdcsc.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
452	msdcsc.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2400	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	82
PID 2028 wrote to memory of 2400	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	82
PID 2028 wrote to memory of 2400	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	82
PID 2028 wrote to memory of 3252	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	84
PID 2028 wrote to memory of 3252	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	84
PID 2028 wrote to memory of 3252	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	84
PID 2400 wrote to memory of 4444	2400	cmd.exe	86
PID 2400 wrote to memory of 4444	2400	cmd.exe	86
PID 2400 wrote to memory of 4444	2400	cmd.exe	86
PID 3252 wrote to memory of 2300	3252	cmd.exe	87
PID 3252 wrote to memory of 2300	3252	cmd.exe	87
PID 3252 wrote to memory of 2300	3252	cmd.exe	87
PID 2028 wrote to memory of 452	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	88
PID 2028 wrote to memory of 452	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	88
PID 2028 wrote to memory of 452	2028	330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe	88
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89
PID 452 wrote to memory of 4024	452	msdcsc.exe	89

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
4444	attrib.exe
2300	attrib.exe

C:\Users\Admin\AppData\Local\Temp\330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2400
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\330ccba4a7ebf89c3f94b8c5ca9aa60f_JaffaCakes118.exe" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:4444
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3252
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - Views/modifies file attributes
    PID:2300
- C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
  "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
  2⤵
  - Modifies firewall policy service
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:452
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    PID:4024

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
252KB

MD5
330ccba4a7ebf89c3f94b8c5ca9aa60f

SHA1
00997a2cd5afcfad10383d64de7b080537cfc463

SHA256
831e0c164298c0335e968e6aa43f0f6d2f145d54ff0ece88a5c8ff697b9ba082

SHA512
a47dad8c0433aa631238b8c9eaa5e2eef5442cb377fc08333a3b66443d2163d13ee9a40f45b2ecc47be33b681578aa93d96d220a6b21263aec3ab64b14a07357

Download Submit
memory/452-68-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-76-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-62-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-63-0x00000000009E0000-0x00000000009E1000-memory.dmp

Filesize
4KB

Download
memory/452-81-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-79-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-67-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-77-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-73-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-70-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-69-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-74-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/452-75-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2028-1-0x0000000000BD0000-0x0000000000BD1000-memory.dmp

Filesize
4KB

Download
memory/2028-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2028-66-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/4024-64-0x0000000000FE0000-0x0000000000FE1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads