darkcomet | 2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a

General

Target

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Size

252KB
MD5

a0303b31a98b225c23583db05b31bb78
SHA1

1d2843958d2fb7873763be62df48a4ad9d281e0a
SHA256

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a
SHA512

b0ea5c2f2b67412951a825a56e36cf4e749843bfbae4f86588cc3a49203886c399d2a040a83db74ccf79b13fbbc3ccd398b916ef1bee2ae75ca5bfade152729b

Score

10^/10

darkcomet guest16 persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

ximer2020.ddns.net:1604

Mutex

DC_MUTEX-4U0HFC0

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
aDFqoxfKfrcR
install
true
offline_keylogger
true
password
82121020202222
persistence
true
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

T1004

Modify Registry

T1112

Processes:

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.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"	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

508 msdcsc.exe

pid	process
508	msdcsc.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe	upx
behavioral2/memory/976-6-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/976-8-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral2/memory/976-9-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

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:

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\International\Geo\Nation	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe

Deletes itself 1 IoCs

Processes:

notepad.exe

pid process

2548 notepad.exe

pid	process
2548	notepad.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Users\\Admin\\Documents\\MSDCSC\\msdcsc.exe"	iexplore.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 508 set thread context of 976 508 msdcsc.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 508 set thread context of 976	508	msdcsc.exe	iexplore.exe

Modifies registry class 1 IoCs

Processes:

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

iexplore.exe

pid process

976 iexplore.exe

pid	process
976	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeSecurityPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeTakeOwnershipPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeLoadDriverPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeSystemProfilePrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeSystemtimePrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeProfSingleProcessPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeIncBasePriorityPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeCreatePagefilePrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeBackupPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeRestorePrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeShutdownPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeDebugPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeSystemEnvironmentPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeChangeNotifyPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeRemoteShutdownPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeUndockPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeManageVolumePrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeImpersonatePrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeCreateGlobalPrivilege	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: 33	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: 34	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: 35	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: 36	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
Token: SeIncreaseQuotaPrivilege	508	msdcsc.exe
Token: SeSecurityPrivilege	508	msdcsc.exe
Token: SeTakeOwnershipPrivilege	508	msdcsc.exe
Token: SeLoadDriverPrivilege	508	msdcsc.exe
Token: SeSystemProfilePrivilege	508	msdcsc.exe
Token: SeSystemtimePrivilege	508	msdcsc.exe
Token: SeProfSingleProcessPrivilege	508	msdcsc.exe
Token: SeIncBasePriorityPrivilege	508	msdcsc.exe
Token: SeCreatePagefilePrivilege	508	msdcsc.exe
Token: SeBackupPrivilege	508	msdcsc.exe
Token: SeRestorePrivilege	508	msdcsc.exe
Token: SeShutdownPrivilege	508	msdcsc.exe
Token: SeDebugPrivilege	508	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	508	msdcsc.exe
Token: SeChangeNotifyPrivilege	508	msdcsc.exe
Token: SeRemoteShutdownPrivilege	508	msdcsc.exe
Token: SeUndockPrivilege	508	msdcsc.exe
Token: SeManageVolumePrivilege	508	msdcsc.exe
Token: SeImpersonatePrivilege	508	msdcsc.exe
Token: SeCreateGlobalPrivilege	508	msdcsc.exe
Token: 33	508	msdcsc.exe
Token: 34	508	msdcsc.exe
Token: 35	508	msdcsc.exe
Token: 36	508	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	976	iexplore.exe
Token: SeSecurityPrivilege	976	iexplore.exe
Token: SeTakeOwnershipPrivilege	976	iexplore.exe
Token: SeLoadDriverPrivilege	976	iexplore.exe
Token: SeSystemProfilePrivilege	976	iexplore.exe
Token: SeSystemtimePrivilege	976	iexplore.exe
Token: SeProfSingleProcessPrivilege	976	iexplore.exe
Token: SeIncBasePriorityPrivilege	976	iexplore.exe
Token: SeCreatePagefilePrivilege	976	iexplore.exe
Token: SeBackupPrivilege	976	iexplore.exe
Token: SeRestorePrivilege	976	iexplore.exe
Token: SeShutdownPrivilege	976	iexplore.exe
Token: SeDebugPrivilege	976	iexplore.exe
Token: SeSystemEnvironmentPrivilege	976	iexplore.exe
Token: SeChangeNotifyPrivilege	976	iexplore.exe
Token: SeRemoteShutdownPrivilege	976	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

976 iexplore.exe

pid	process
976	iexplore.exe

Suspicious use of WriteProcessMemory 47 IoCs

Processes:

2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 2548	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	notepad.exe
PID 1020 wrote to memory of 508	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	msdcsc.exe
PID 1020 wrote to memory of 508	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	msdcsc.exe
PID 1020 wrote to memory of 508	1020	2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe	msdcsc.exe
PID 508 wrote to memory of 976	508	msdcsc.exe	iexplore.exe
PID 508 wrote to memory of 976	508	msdcsc.exe	iexplore.exe
PID 508 wrote to memory of 976	508	msdcsc.exe	iexplore.exe
PID 508 wrote to memory of 976	508	msdcsc.exe	iexplore.exe
PID 508 wrote to memory of 976	508	msdcsc.exe	iexplore.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe
PID 976 wrote to memory of 200	976	iexplore.exe	notepad.exe

C:\Users\Admin\AppData\Local\Temp\2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.exe
"C:\Users\Admin\AppData\Local\Temp\2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a.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:1020

C:\Windows\SysWOW64\notepad.exe
notepad
2⤵
- Deletes itself
PID:2548

C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
"C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:508

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:976

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:200

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\Documents\MSDCSC\msdcsc.exe
MD5
a0303b31a98b225c23583db05b31bb78

SHA1
1d2843958d2fb7873763be62df48a4ad9d281e0a

SHA256
2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a

SHA512
b0ea5c2f2b67412951a825a56e36cf4e749843bfbae4f86588cc3a49203886c399d2a040a83db74ccf79b13fbbc3ccd398b916ef1bee2ae75ca5bfade152729b

Download Submit
C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
MD5
a0303b31a98b225c23583db05b31bb78

SHA1
1d2843958d2fb7873763be62df48a4ad9d281e0a

SHA256
2171bac5512cef55ce1ffcf96bf1395d9a826f29bcff90a6c4cfe794d615575a

SHA512
b0ea5c2f2b67412951a825a56e36cf4e749843bfbae4f86588cc3a49203886c399d2a040a83db74ccf79b13fbbc3ccd398b916ef1bee2ae75ca5bfade152729b

Download Submit
memory/200-10-0x0000000000000000-mapping.dmp

Download
memory/200-12-0x0000000000000000-mapping.dmp

Download
memory/200-11-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/508-3-0x0000000000000000-mapping.dmp

Download
memory/976-6-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/976-7-0x00000000004B5820-mapping.dmp

Download
memory/976-8-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/976-9-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2548-0-0x0000000000000000-mapping.dmp

Download
memory/2548-2-0x0000000000000000-mapping.dmp

Download
memory/2548-1-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads