darkcomet | cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5

General

Target

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Size

756KB
MD5

861bd0deacbaa5ba7f5fe80f78d1f5b4
SHA1

59792a6b68904c29cf3baad77f033b64dcca3f5c
SHA256

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5
SHA512

d0766f0147e5a2f302cd4adf7be5c34c158b42f78de18ae8731d8274ce9a20cadbd568400953a5382c48780136795bb4f0483612c3ac149fecb9a4b51c09de91
SSDEEP

12288:u9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hA:6Z1xuVVjfFoynPaVBUR8f+kN10EBq

Score

10^/10

darkcomet drhacker persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

DrHacker

C2

drhacker.no-ip.info:81

Mutex

DC_MUTEX-4FCVTUB

Attributes

InstallPath
system.exe
gencode
y381anlYCr2s
install
true
offline_keylogger
true
persistence
false
reg_key
system

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

T1004

Modify Registry

T1112

Processes:

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe"	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

Executes dropped EXE 1 IoCs

Processes:

system.exe

pid process

2384 system.exe

pid	process
2384	system.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:

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\system = "C:\\Users\\Admin\\AppData\\Local\\Temp\\system.exe"	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

system.exe

description pid process target process

PID 2384 set thread context of 2816 2384 system.exe iexplore.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	pid	process	target process
PID 2384 set thread context of 2816	2384	system.exe	iexplore.exe

Modifies registry class 1 IoCs

Processes:

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

2816 iexplore.exe

pid	process
2816	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exesystem.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeSecurityPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeTakeOwnershipPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeLoadDriverPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeSystemProfilePrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeSystemtimePrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeProfSingleProcessPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeIncBasePriorityPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeCreatePagefilePrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeBackupPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeRestorePrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeShutdownPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeDebugPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeSystemEnvironmentPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeChangeNotifyPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeRemoteShutdownPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeUndockPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeManageVolumePrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeImpersonatePrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeCreateGlobalPrivilege	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: 33	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: 34	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: 35	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: 36	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
Token: SeIncreaseQuotaPrivilege	2384	system.exe
Token: SeSecurityPrivilege	2384	system.exe
Token: SeTakeOwnershipPrivilege	2384	system.exe
Token: SeLoadDriverPrivilege	2384	system.exe
Token: SeSystemProfilePrivilege	2384	system.exe
Token: SeSystemtimePrivilege	2384	system.exe
Token: SeProfSingleProcessPrivilege	2384	system.exe
Token: SeIncBasePriorityPrivilege	2384	system.exe
Token: SeCreatePagefilePrivilege	2384	system.exe
Token: SeBackupPrivilege	2384	system.exe
Token: SeRestorePrivilege	2384	system.exe
Token: SeShutdownPrivilege	2384	system.exe
Token: SeDebugPrivilege	2384	system.exe
Token: SeSystemEnvironmentPrivilege	2384	system.exe
Token: SeChangeNotifyPrivilege	2384	system.exe
Token: SeRemoteShutdownPrivilege	2384	system.exe
Token: SeUndockPrivilege	2384	system.exe
Token: SeManageVolumePrivilege	2384	system.exe
Token: SeImpersonatePrivilege	2384	system.exe
Token: SeCreateGlobalPrivilege	2384	system.exe
Token: 33	2384	system.exe
Token: 34	2384	system.exe
Token: 35	2384	system.exe
Token: 36	2384	system.exe
Token: SeIncreaseQuotaPrivilege	2816	iexplore.exe
Token: SeSecurityPrivilege	2816	iexplore.exe
Token: SeTakeOwnershipPrivilege	2816	iexplore.exe
Token: SeLoadDriverPrivilege	2816	iexplore.exe
Token: SeSystemProfilePrivilege	2816	iexplore.exe
Token: SeSystemtimePrivilege	2816	iexplore.exe
Token: SeProfSingleProcessPrivilege	2816	iexplore.exe
Token: SeIncBasePriorityPrivilege	2816	iexplore.exe
Token: SeCreatePagefilePrivilege	2816	iexplore.exe
Token: SeBackupPrivilege	2816	iexplore.exe
Token: SeRestorePrivilege	2816	iexplore.exe
Token: SeShutdownPrivilege	2816	iexplore.exe
Token: SeDebugPrivilege	2816	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2816	iexplore.exe
Token: SeChangeNotifyPrivilege	2816	iexplore.exe
Token: SeRemoteShutdownPrivilege	2816	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

2816 iexplore.exe

pid	process
2816	iexplore.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exesystem.exe

description	pid	process	target process
PID 3068 wrote to memory of 2384	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe	system.exe
PID 3068 wrote to memory of 2384	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe	system.exe
PID 3068 wrote to memory of 2384	3068	cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe	system.exe
PID 2384 wrote to memory of 2816	2384	system.exe	iexplore.exe
PID 2384 wrote to memory of 2816	2384	system.exe	iexplore.exe
PID 2384 wrote to memory of 2816	2384	system.exe	iexplore.exe
PID 2384 wrote to memory of 2816	2384	system.exe	iexplore.exe
PID 2384 wrote to memory of 2816	2384	system.exe	iexplore.exe

C:\Users\Admin\AppData\Local\Temp\cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.exe
"C:\Users\Admin\AppData\Local\Temp\cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5.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:3068

C:\Users\Admin\AppData\Local\Temp\system.exe
"C:\Users\Admin\AppData\Local\Temp\system.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2384

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2816

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\system.exe
Filesize
756KB

MD5
861bd0deacbaa5ba7f5fe80f78d1f5b4

SHA1
59792a6b68904c29cf3baad77f033b64dcca3f5c

SHA256
cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5

SHA512
d0766f0147e5a2f302cd4adf7be5c34c158b42f78de18ae8731d8274ce9a20cadbd568400953a5382c48780136795bb4f0483612c3ac149fecb9a4b51c09de91

Download Submit
C:\Users\Admin\AppData\Local\Temp\system.exe
Filesize
756KB

MD5
861bd0deacbaa5ba7f5fe80f78d1f5b4

SHA1
59792a6b68904c29cf3baad77f033b64dcca3f5c

SHA256
cac92ba7a226d877c369403c880f4251391c88409159509e378724b32e57dac5

SHA512
d0766f0147e5a2f302cd4adf7be5c34c158b42f78de18ae8731d8274ce9a20cadbd568400953a5382c48780136795bb4f0483612c3ac149fecb9a4b51c09de91

Download Submit
memory/2384-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads