remcos | 4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

Analysis

max time kernel
150s
max time network
155s
platform
windows7_x64
resource
win7v20210408
submitted
11-05-2021 18:03

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

9ed17a3e5105ce4397d81965069ac0a8.exe
Size

1.7MB
MD5

9ed17a3e5105ce4397d81965069ac0a8
SHA1

bfba64c4d42ccd0c22409a9c2b72f72d68949d61
SHA256

4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d
SHA512

b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

ghdyuienah123.freedynamicdns.org:2006

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 2 IoCs

Processes:

win.exewin.exe

pid process

852 win.exe
1060 win.exe
Loads dropped DLL 6 IoCs

Processes:

cmd.exeWerFault.exe

pid process

316 cmd.exe
944 WerFault.exe
944 WerFault.exe
944 WerFault.exe
944 WerFault.exe
944 WerFault.exe

pid	process
852	win.exe
1060	win.exe

pid	process
316	cmd.exe
944	WerFault.exe
944	WerFault.exe
944	WerFault.exe
944	WerFault.exe
944	WerFault.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

9ed17a3e5105ce4397d81965069ac0a8.exewin.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\	9ed17a3e5105ce4397d81965069ac0a8.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	9ed17a3e5105ce4397d81965069ac0a8.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\	win.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\win = "\"C:\\Users\\Admin\\AppData\\Roaming\\win.exe\""	win.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 15 IoCs

Processes:

9ed17a3e5105ce4397d81965069ac0a8.exewin.exe

pid	process
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
852	win.exe
852	win.exe
852	win.exe
852	win.exe
852	win.exe
852	win.exe
852	win.exe
852	win.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

9ed17a3e5105ce4397d81965069ac0a8.exewin.exe

description	pid	process	target process
PID 1848 set thread context of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 852 set thread context of 1060	852	win.exe	win.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

944 852 WerFault.exe win.exe
Delays execution with timeout.exe 2 IoCs
evasion

Processes:

timeout.exetimeout.exe

pid process

1560 timeout.exe
1996 timeout.exe

pid	pid_target	process	target process
944	852	WerFault.exe	win.exe

pid	process
1560	timeout.exe
1996	timeout.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

Processes:

9ed17a3e5105ce4397d81965069ac0a8.exewin.exeWerFault.exe

pid	process
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
1848	9ed17a3e5105ce4397d81965069ac0a8.exe
852	win.exe
852	win.exe
852	win.exe
944	WerFault.exe
944	WerFault.exe
944	WerFault.exe
944	WerFault.exe
944	WerFault.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

WerFault.exe

pid process

944 WerFault.exe

pid	process
944	WerFault.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

9ed17a3e5105ce4397d81965069ac0a8.exewin.exeWerFault.exe

description	pid	process
Token: SeDebugPrivilege	1848	9ed17a3e5105ce4397d81965069ac0a8.exe
Token: SeDebugPrivilege	852	win.exe
Token: SeDebugPrivilege	944	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

win.exe

pid process

1060 win.exe

pid	process
1060	win.exe

Suspicious use of WriteProcessMemory 54 IoCs

Processes:

9ed17a3e5105ce4397d81965069ac0a8.execmd.exe9ed17a3e5105ce4397d81965069ac0a8.exeWScript.execmd.exewin.execmd.exe

description	pid	process	target process
PID 1848 wrote to memory of 1460	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	cmd.exe
PID 1848 wrote to memory of 1460	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	cmd.exe
PID 1848 wrote to memory of 1460	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	cmd.exe
PID 1848 wrote to memory of 1460	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	cmd.exe
PID 1460 wrote to memory of 1560	1460	cmd.exe	timeout.exe
PID 1460 wrote to memory of 1560	1460	cmd.exe	timeout.exe
PID 1460 wrote to memory of 1560	1460	cmd.exe	timeout.exe
PID 1460 wrote to memory of 1560	1460	cmd.exe	timeout.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1848 wrote to memory of 1596	1848	9ed17a3e5105ce4397d81965069ac0a8.exe	9ed17a3e5105ce4397d81965069ac0a8.exe
PID 1596 wrote to memory of 1600	1596	9ed17a3e5105ce4397d81965069ac0a8.exe	WScript.exe
PID 1596 wrote to memory of 1600	1596	9ed17a3e5105ce4397d81965069ac0a8.exe	WScript.exe
PID 1596 wrote to memory of 1600	1596	9ed17a3e5105ce4397d81965069ac0a8.exe	WScript.exe
PID 1596 wrote to memory of 1600	1596	9ed17a3e5105ce4397d81965069ac0a8.exe	WScript.exe
PID 1600 wrote to memory of 316	1600	WScript.exe	cmd.exe
PID 1600 wrote to memory of 316	1600	WScript.exe	cmd.exe
PID 1600 wrote to memory of 316	1600	WScript.exe	cmd.exe
PID 1600 wrote to memory of 316	1600	WScript.exe	cmd.exe
PID 316 wrote to memory of 852	316	cmd.exe	win.exe
PID 316 wrote to memory of 852	316	cmd.exe	win.exe
PID 316 wrote to memory of 852	316	cmd.exe	win.exe
PID 316 wrote to memory of 852	316	cmd.exe	win.exe
PID 852 wrote to memory of 336	852	win.exe	cmd.exe
PID 852 wrote to memory of 336	852	win.exe	cmd.exe
PID 852 wrote to memory of 336	852	win.exe	cmd.exe
PID 852 wrote to memory of 336	852	win.exe	cmd.exe
PID 336 wrote to memory of 1996	336	cmd.exe	timeout.exe
PID 336 wrote to memory of 1996	336	cmd.exe	timeout.exe
PID 336 wrote to memory of 1996	336	cmd.exe	timeout.exe
PID 336 wrote to memory of 1996	336	cmd.exe	timeout.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 1060	852	win.exe	win.exe
PID 852 wrote to memory of 944	852	win.exe	WerFault.exe
PID 852 wrote to memory of 944	852	win.exe	WerFault.exe
PID 852 wrote to memory of 944	852	win.exe	WerFault.exe
PID 852 wrote to memory of 944	852	win.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\9ed17a3e5105ce4397d81965069ac0a8.exe
"C:\Users\Admin\AppData\Local\Temp\9ed17a3e5105ce4397d81965069ac0a8.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1848

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
2⤵
- Suspicious use of WriteProcessMemory
PID:1460

C:\Windows\SysWOW64\timeout.exe
timeout 1
3⤵
- Delays execution with timeout.exe
PID:1560

C:\Users\Admin\AppData\Local\Temp\9ed17a3e5105ce4397d81965069ac0a8.exe
"C:\Users\Admin\AppData\Local\Temp\9ed17a3e5105ce4397d81965069ac0a8.exe"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1596

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:1600

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:316

C:\Users\Admin\AppData\Roaming\win.exe
C:\Users\Admin\AppData\Roaming\win.exe
5⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:852

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c timeout 1
6⤵
- Suspicious use of WriteProcessMemory
PID:336

C:\Windows\SysWOW64\timeout.exe
timeout 1
7⤵
- Delays execution with timeout.exe
PID:1996

C:\Users\Admin\AppData\Roaming\win.exe
"C:\Users\Admin\AppData\Roaming\win.exe"
6⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:1060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 852 -s 900
6⤵
- Loads dropped DLL
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:944

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs
MD5
4a74e626596d6e66b4bbc59ee6848f2d

SHA1
047849ac8735ecc0943428c7cd5e00b52eee06ed

SHA256
98bd6dc219a7a3e04d3d67bbec9f0b4d4640831a3a6be0a0078b050041088b0e

SHA512
1cd943482d0f1ce2ffaf6ee4a82895e4d57c52051bb14bbda0548cf072b4c5cbe719d2cdb549b5ae7c0241dd9c68dd9d1674acd26aed684b8145500079cc5403

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
C:\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
\Users\Admin\AppData\Roaming\win.exe
MD5
9ed17a3e5105ce4397d81965069ac0a8

SHA1
bfba64c4d42ccd0c22409a9c2b72f72d68949d61

SHA256
4f8e0185fbd30f92a58d1846b85105db4942fb932c10c57705e6ff1a856d804d

SHA512
b85bc043b89c68c51d6c365d58f3592065a9bca6823864b6567800084b74c7a8c8d2cc0c916f6213ce6e5d7cb98ca40e6e77802d14c330711af60848c83ac9da

Download Submit
memory/316-73-0x0000000000000000-mapping.dmp

Download
memory/336-81-0x0000000000000000-mapping.dmp

Download
memory/852-76-0x0000000000000000-mapping.dmp

Download
memory/852-78-0x0000000000020000-0x0000000000021000-memory.dmp

Filesize
4KB

Download
memory/852-83-0x0000000004BB0000-0x0000000004BB1000-memory.dmp

Filesize
4KB

Download
memory/944-88-0x0000000000000000-mapping.dmp

Download
memory/944-95-0x00000000002D0000-0x00000000002D1000-memory.dmp

Filesize
4KB

Download
memory/1060-93-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1060-85-0x0000000000413FA4-mapping.dmp

Download
memory/1460-64-0x0000000000000000-mapping.dmp

Download
memory/1560-65-0x0000000000000000-mapping.dmp

Download
memory/1596-68-0x00000000757C1000-0x00000000757C3000-memory.dmp

Filesize
8KB

Download
memory/1596-67-0x0000000000413FA4-mapping.dmp

Download
memory/1596-66-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1596-70-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1600-69-0x0000000000000000-mapping.dmp

Download
memory/1848-63-0x0000000000540000-0x000000000057D000-memory.dmp

Filesize
244KB

Download
memory/1848-62-0x0000000005EB0000-0x0000000005EB1000-memory.dmp

Filesize
4KB

Download
memory/1848-60-0x0000000000C30000-0x0000000000C31000-memory.dmp

Filesize
4KB

Download
memory/1996-82-0x0000000000000000-mapping.dmp

Download