darkcomet | cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608

Analysis

max time kernel
151s
max time network
9s
platform
windows7_x64
resource
win7v20210410
submitted
16-05-2021 02:51

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General

Target

cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
Size

1.9MB
MD5

c8e40b0239e76e084d28b19e611700df
SHA1

a4166c99927fccfb4338c3902439fca15c4a26d9
SHA256

cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608
SHA512

e7e067720ae7860a7f75af6b041ea3aff58191a875a553d6c93eddb73339228fa9c9364c3872b288cd935ec43ba9f965a4efaaa4de2893f57b447bf9f7bc90d5

Score

10^/10

darkcomet persistence rat trojan upx

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Executes dropped EXE 3 IoCs

Processes:

test.exetest.exetest.exe

pid process

320 test.exe
328 test.exe
864 test.exe

pid	process
320	test.exe
328	test.exe
864	test.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1908-74-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1908-70-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/864-111-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/864-121-0x0000000000400000-0x00000000004B7000-memory.dmp	upx

Loads dropped DLL 5 IoCs

Processes:

cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe

pid	process
1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\test\\test.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exetest.exe

description	pid	process	target process
PID 1084 set thread context of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 320 set thread context of 328	320	test.exe	test.exe
PID 320 set thread context of 864	320	test.exe	test.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

test.exetest.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	864	test.exe
Token: SeSecurityPrivilege	864	test.exe
Token: SeTakeOwnershipPrivilege	864	test.exe
Token: SeLoadDriverPrivilege	864	test.exe
Token: SeSystemProfilePrivilege	864	test.exe
Token: SeSystemtimePrivilege	864	test.exe
Token: SeProfSingleProcessPrivilege	864	test.exe
Token: SeIncBasePriorityPrivilege	864	test.exe
Token: SeCreatePagefilePrivilege	864	test.exe
Token: SeBackupPrivilege	864	test.exe
Token: SeRestorePrivilege	864	test.exe
Token: SeShutdownPrivilege	864	test.exe
Token: SeDebugPrivilege	864	test.exe
Token: SeSystemEnvironmentPrivilege	864	test.exe
Token: SeChangeNotifyPrivilege	864	test.exe
Token: SeRemoteShutdownPrivilege	864	test.exe
Token: SeUndockPrivilege	864	test.exe
Token: SeManageVolumePrivilege	864	test.exe
Token: SeImpersonatePrivilege	864	test.exe
Token: SeCreateGlobalPrivilege	864	test.exe
Token: 33	864	test.exe
Token: 34	864	test.exe
Token: 35	864	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe
Token: SeDebugPrivilege	328	test.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.execf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exetest.exetest.exe

pid	process
1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
320	test.exe
328	test.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.execf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.execmd.exetest.exe

description	pid	process	target process
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1084 wrote to memory of 1908	1084	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
PID 1908 wrote to memory of 728	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cmd.exe
PID 1908 wrote to memory of 728	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cmd.exe
PID 1908 wrote to memory of 728	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cmd.exe
PID 1908 wrote to memory of 728	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	cmd.exe
PID 728 wrote to memory of 1176	728	cmd.exe	reg.exe
PID 728 wrote to memory of 1176	728	cmd.exe	reg.exe
PID 728 wrote to memory of 1176	728	cmd.exe	reg.exe
PID 728 wrote to memory of 1176	728	cmd.exe	reg.exe
PID 1908 wrote to memory of 320	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	test.exe
PID 1908 wrote to memory of 320	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	test.exe
PID 1908 wrote to memory of 320	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	test.exe
PID 1908 wrote to memory of 320	1908	cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 328	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe
PID 320 wrote to memory of 864	320	test.exe	test.exe

C:\Users\Admin\AppData\Local\Temp\cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
"C:\Users\Admin\AppData\Local\Temp\cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1084

C:\Users\Admin\AppData\Local\Temp\cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe
"C:\Users\Admin\AppData\Local\Temp\cf9e19205571c0dc595854b01d2292939517f469e19f28724a5db8c3f728b608.exe"
2⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\SANMH.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:728

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "svchost" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\test\test.exe" /f
4⤵
- Adds Run key to start application
PID:1176

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:320

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:328

C:\Users\Admin\AppData\Roaming\test\test.exe
"C:\Users\Admin\AppData\Roaming\test\test.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:864

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\SANMH.bat
MD5
527683c48cc4c7190219814c77b72fe0

SHA1
d995878a8f4b9824a0508039eeada5376be9a52d

SHA256
bbebf3e66136e700d8e3e2e0c8f461cdd9d7e68fe5a18a235afe86344932fb4b

SHA512
408a53b240c23fa34153ccc2b2315f28a9741121ecc9b76d50267ee62d78230e65574327369f83c779c781802c0c28f6c578703c01a67de46c3d44f71b814fa6

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
C:\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
\Users\Admin\AppData\Roaming\test\test.exe
MD5
a602395fde9398f10e2d22892c71ebf0

SHA1
a2462293369bd887d9bf92c26263473e2e77cffe

SHA256
397df290b6068bbf7ba86c08a102c037bcf4294dcd65c8b45f8600a8af032e09

SHA512
5d9307682ed2d5ccf77f4d5d12deca987b46e205abb6bd220074536b726a12e8ba04f547d40a95dcf65d2a88237f460e5738625d933426d06dd6e4e212b6b25c

Download Submit
memory/320-90-0x0000000000000000-mapping.dmp

Download
memory/328-107-0x00000000004085D0-mapping.dmp

Download
memory/728-82-0x0000000000000000-mapping.dmp

Download
memory/864-111-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/864-121-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/864-122-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/864-114-0x00000000004B5640-mapping.dmp

Download
memory/1084-66-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-68-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-76-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/1084-73-0x00000000003A0000-0x00000000003A1000-memory.dmp

Filesize
4KB

Download
memory/1084-78-0x0000000000550000-0x0000000000551000-memory.dmp

Filesize
4KB

Download
memory/1084-77-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/1084-62-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-72-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/1084-69-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-59-0x0000000000400000-0x000000000054B000-memory.dmp

Filesize
1.3MB

Download
memory/1084-67-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-75-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/1084-65-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1084-63-0x0000000000401000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1176-84-0x0000000000000000-mapping.dmp

Download
memory/1908-70-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-81-0x00000000752F1000-0x00000000752F3000-memory.dmp

Filesize
8KB

Download
memory/1908-71-0x00000000004085D0-mapping.dmp

Download
memory/1908-74-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download