darkcomet | b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6

General

Target

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Size

658KB
MD5

bdf791f66075bebdfee70d793c3eaeab
SHA1

5742ec2efc2a5089f57445482e6fb09b0481cc7f
SHA256

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6
SHA512

da624cfda66301872be84ceed9b0c696705f75479b73e16c16cc519ecc8361257199bac3af16a116acf321f8c7ac82268ae29ff479e1a8ebe290034156c29fb6

Score

10^/10

darkcomet ziyaret�i evasion persistence rat trojan

Malware Config

Extracted

Family

darkcomet

Botnet

ziyaret�i

C2

sportage125.ddns.net:1604

sportagge1.ddns.net:1064

Mutex

DC_MUTEX-NPESZG3

Attributes

InstallPath
MSDCSC\msdcsc.exe
gencode
3bcPiMfDN7ts
install
true
offline_keylogger
true
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:

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe

Executes dropped EXE 1 IoCs

Processes:

msdcsc.exe

pid process

1748 msdcsc.exe
Sets file to hidden 1 TTPs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1158

pid	process
1748	msdcsc.exe

Loads dropped DLL 2 IoCs

Processes:

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe

pid	process
1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exemsdcsc.exeiexplore.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	msdcsc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MicroUpdate = "C:\\Windows\\system32\\MSDCSC\\msdcsc.exe"	iexplore.exe

Drops file in System32 directory 3 IoCs

Processes:

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe

description	ioc	process
File created	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\msdcsc.exe	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
File opened for modification	C:\Windows\SysWOW64\MSDCSC\	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

msdcsc.exe

description pid process target process

PID 1748 set thread context of 1728 1748 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 1748 set thread context of 1728	1748	msdcsc.exe	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exemsdcsc.exeiexplore.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeSecurityPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeTakeOwnershipPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeLoadDriverPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeSystemProfilePrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeSystemtimePrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeProfSingleProcessPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeIncBasePriorityPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeCreatePagefilePrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeBackupPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeRestorePrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeShutdownPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeDebugPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeSystemEnvironmentPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeChangeNotifyPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeRemoteShutdownPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeUndockPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeManageVolumePrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeImpersonatePrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeCreateGlobalPrivilege	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: 33	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: 34	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: 35	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
Token: SeIncreaseQuotaPrivilege	1748	msdcsc.exe
Token: SeSecurityPrivilege	1748	msdcsc.exe
Token: SeTakeOwnershipPrivilege	1748	msdcsc.exe
Token: SeLoadDriverPrivilege	1748	msdcsc.exe
Token: SeSystemProfilePrivilege	1748	msdcsc.exe
Token: SeSystemtimePrivilege	1748	msdcsc.exe
Token: SeProfSingleProcessPrivilege	1748	msdcsc.exe
Token: SeIncBasePriorityPrivilege	1748	msdcsc.exe
Token: SeCreatePagefilePrivilege	1748	msdcsc.exe
Token: SeBackupPrivilege	1748	msdcsc.exe
Token: SeRestorePrivilege	1748	msdcsc.exe
Token: SeShutdownPrivilege	1748	msdcsc.exe
Token: SeDebugPrivilege	1748	msdcsc.exe
Token: SeSystemEnvironmentPrivilege	1748	msdcsc.exe
Token: SeChangeNotifyPrivilege	1748	msdcsc.exe
Token: SeRemoteShutdownPrivilege	1748	msdcsc.exe
Token: SeUndockPrivilege	1748	msdcsc.exe
Token: SeManageVolumePrivilege	1748	msdcsc.exe
Token: SeImpersonatePrivilege	1748	msdcsc.exe
Token: SeCreateGlobalPrivilege	1748	msdcsc.exe
Token: 33	1748	msdcsc.exe
Token: 34	1748	msdcsc.exe
Token: 35	1748	msdcsc.exe
Token: SeIncreaseQuotaPrivilege	1728	iexplore.exe
Token: SeSecurityPrivilege	1728	iexplore.exe
Token: SeTakeOwnershipPrivilege	1728	iexplore.exe
Token: SeLoadDriverPrivilege	1728	iexplore.exe
Token: SeSystemProfilePrivilege	1728	iexplore.exe
Token: SeSystemtimePrivilege	1728	iexplore.exe
Token: SeProfSingleProcessPrivilege	1728	iexplore.exe
Token: SeIncBasePriorityPrivilege	1728	iexplore.exe
Token: SeCreatePagefilePrivilege	1728	iexplore.exe
Token: SeBackupPrivilege	1728	iexplore.exe
Token: SeRestorePrivilege	1728	iexplore.exe
Token: SeShutdownPrivilege	1728	iexplore.exe
Token: SeDebugPrivilege	1728	iexplore.exe
Token: SeSystemEnvironmentPrivilege	1728	iexplore.exe
Token: SeChangeNotifyPrivilege	1728	iexplore.exe
Token: SeRemoteShutdownPrivilege	1728	iexplore.exe
Token: SeUndockPrivilege	1728	iexplore.exe
Token: SeManageVolumePrivilege	1728	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

iexplore.exe

pid process

1728 iexplore.exe

pid	process
1728	iexplore.exe

Suspicious use of WriteProcessMemory 49 IoCs

Processes:

b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.execmd.execmd.exemsdcsc.exeiexplore.exe

description	pid	process	target process
PID 1088 wrote to memory of 1464	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1088 wrote to memory of 1464	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1088 wrote to memory of 1464	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1088 wrote to memory of 1464	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1088 wrote to memory of 1212	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1088 wrote to memory of 1212	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1088 wrote to memory of 1212	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1088 wrote to memory of 1212	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	cmd.exe
PID 1464 wrote to memory of 2004	1464	cmd.exe	attrib.exe
PID 1464 wrote to memory of 2004	1464	cmd.exe	attrib.exe
PID 1464 wrote to memory of 2004	1464	cmd.exe	attrib.exe
PID 1464 wrote to memory of 2004	1464	cmd.exe	attrib.exe
PID 1212 wrote to memory of 1892	1212	cmd.exe	attrib.exe
PID 1212 wrote to memory of 1892	1212	cmd.exe	attrib.exe
PID 1212 wrote to memory of 1892	1212	cmd.exe	attrib.exe
PID 1212 wrote to memory of 1892	1212	cmd.exe	attrib.exe
PID 1088 wrote to memory of 1748	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	msdcsc.exe
PID 1088 wrote to memory of 1748	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	msdcsc.exe
PID 1088 wrote to memory of 1748	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	msdcsc.exe
PID 1088 wrote to memory of 1748	1088	b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe	msdcsc.exe
PID 1748 wrote to memory of 1728	1748	msdcsc.exe	iexplore.exe
PID 1748 wrote to memory of 1728	1748	msdcsc.exe	iexplore.exe
PID 1748 wrote to memory of 1728	1748	msdcsc.exe	iexplore.exe
PID 1748 wrote to memory of 1728	1748	msdcsc.exe	iexplore.exe
PID 1748 wrote to memory of 1728	1748	msdcsc.exe	iexplore.exe
PID 1748 wrote to memory of 1728	1748	msdcsc.exe	iexplore.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe
PID 1728 wrote to memory of 1408	1728	iexplore.exe	notepad.exe

Views/modifies file attributes 1 TTPs 2 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exe

pid process

2004 attrib.exe
1892 attrib.exe

pid	process
2004	attrib.exe
1892	attrib.exe

C:\Users\Admin\AppData\Local\Temp\b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe
"C:\Users\Admin\AppData\Local\Temp\b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1088

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:1464

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6.exe" +s +h
3⤵
- Views/modifies file attributes
PID:2004

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:1212

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
3⤵
- Views/modifies file attributes
PID:1892

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe
"C:\Windows\system32\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:1748

C:\Program Files (x86)\Internet Explorer\iexplore.exe
"C:\Program Files (x86)\Internet Explorer\iexplore.exe"
3⤵
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\notepad.exe
notepad
4⤵
PID:1408

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

2

T1158

Registry Run Keys / Startup Folder

Winlogon Helper DLL

Privilege Escalation

Defense Evasion

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\MSDCSC\msdcsc.exe

MD5
bdf791f66075bebdfee70d793c3eaeab

SHA1
5742ec2efc2a5089f57445482e6fb09b0481cc7f

SHA256
b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6

SHA512
da624cfda66301872be84ceed9b0c696705f75479b73e16c16cc519ecc8361257199bac3af16a116acf321f8c7ac82268ae29ff479e1a8ebe290034156c29fb6

Download Submit
C:\Windows\SysWOW64\MSDCSC\msdcsc.exe

MD5
bdf791f66075bebdfee70d793c3eaeab

SHA1
5742ec2efc2a5089f57445482e6fb09b0481cc7f

SHA256
b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6

SHA512
da624cfda66301872be84ceed9b0c696705f75479b73e16c16cc519ecc8361257199bac3af16a116acf321f8c7ac82268ae29ff479e1a8ebe290034156c29fb6

Download Submit
\Windows\SysWOW64\MSDCSC\msdcsc.exe

MD5
bdf791f66075bebdfee70d793c3eaeab

SHA1
5742ec2efc2a5089f57445482e6fb09b0481cc7f

SHA256
b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6

SHA512
da624cfda66301872be84ceed9b0c696705f75479b73e16c16cc519ecc8361257199bac3af16a116acf321f8c7ac82268ae29ff479e1a8ebe290034156c29fb6

Download Submit
\Windows\SysWOW64\MSDCSC\msdcsc.exe

MD5
bdf791f66075bebdfee70d793c3eaeab

SHA1
5742ec2efc2a5089f57445482e6fb09b0481cc7f

SHA256
b5a0eb20c754fca056b0fca57a4b7aff58ba39eab261bf68d42870f7795d8eb6

SHA512
da624cfda66301872be84ceed9b0c696705f75479b73e16c16cc519ecc8361257199bac3af16a116acf321f8c7ac82268ae29ff479e1a8ebe290034156c29fb6

Download Submit
memory/1088-65-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/1088-60-0x00000000753B1000-0x00000000753B3000-memory.dmp

Filesize
8KB

Download
memory/1212-62-0x0000000000000000-mapping.dmp

Download
memory/1408-78-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/1408-75-0x0000000000000000-mapping.dmp

Download
memory/1464-61-0x0000000000000000-mapping.dmp

Download
memory/1728-73-0x000000000048F888-mapping.dmp

Download
memory/1728-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1748-68-0x0000000000000000-mapping.dmp

Download
memory/1748-77-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1892-64-0x0000000000000000-mapping.dmp

Download
memory/2004-63-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads