remcos | a7ada9eefa9c775d0215af6bc497e305f8067290f5e9642e582c6d4c3ec65756

General

Target

PO-scandocumentsfile00108392.exe
Size

851KB
MD5

ed01719e79f8008d4ede16e7edff753a
SHA1

9929ccd810f335d2d2b84e7ba519940bb9f58fe8
SHA256

a7ada9eefa9c775d0215af6bc497e305f8067290f5e9642e582c6d4c3ec65756
SHA512

188adc96dbef43ddc4f110958bf68920288a0b9759317a473e78e146bd302ace63de73da93ec9e644e3526ed9d69472a47ac178e6e3d84ea93ccf21a5a3fab90

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

www.maneediem.com:2404

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos
Executes dropped EXE 1 IoCs

Processes:

owerrinta.exe

pid process

572 owerrinta.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1008 cmd.exe
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

pid	process
572	owerrinta.exe

pid	process
1008	cmd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

vbc.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\	vbc.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\owerrita = "\"C:\\Users\\Admin\\AppData\\Roaming\\owerri\\owerrinta.exe\""	vbc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

PO-scandocumentsfile00108392.exe

description pid process target process

PID 292 set thread context of 896 292 PO-scandocumentsfile00108392.exe vbc.exe

description	pid	process	target process
PID 292 set thread context of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

PO-scandocumentsfile00108392.exevbc.exeWScript.execmd.exe

description	pid	process	target process
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 292 wrote to memory of 896	292	PO-scandocumentsfile00108392.exe	vbc.exe
PID 896 wrote to memory of 284	896	vbc.exe	WScript.exe
PID 896 wrote to memory of 284	896	vbc.exe	WScript.exe
PID 896 wrote to memory of 284	896	vbc.exe	WScript.exe
PID 896 wrote to memory of 284	896	vbc.exe	WScript.exe
PID 284 wrote to memory of 1008	284	WScript.exe	cmd.exe
PID 284 wrote to memory of 1008	284	WScript.exe	cmd.exe
PID 284 wrote to memory of 1008	284	WScript.exe	cmd.exe
PID 284 wrote to memory of 1008	284	WScript.exe	cmd.exe
PID 1008 wrote to memory of 572	1008	cmd.exe	owerrinta.exe
PID 1008 wrote to memory of 572	1008	cmd.exe	owerrinta.exe
PID 1008 wrote to memory of 572	1008	cmd.exe	owerrinta.exe
PID 1008 wrote to memory of 572	1008	cmd.exe	owerrinta.exe

C:\Users\Admin\AppData\Local\Temp\PO-scandocumentsfile00108392.exe
"C:\Users\Admin\AppData\Local\Temp\PO-scandocumentsfile00108392.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:292

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
2⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:896

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
3⤵
- Suspicious use of WriteProcessMemory
PID:284

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\owerri\owerrinta.exe"
4⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1008

C:\Users\Admin\AppData\Roaming\owerri\owerrinta.exe
C:\Users\Admin\AppData\Roaming\owerri\owerrinta.exe
5⤵
- Executes dropped EXE
PID:572

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\install.vbs
MD5
79f2f9da0b9014aaa835d1486a0a6135

SHA1
ffe17bfd9b43abf97d526ee85970b370d60eef0b

SHA256
d7e5cbc45f2651767966aff75220c6c9094ecaf7a04d978f021087fd03f5d428

SHA512
7b05babc0fb5f931c8f889491c05b44684bc851998b93163ea2698e20a6ad9871afc9cf3ff424d7c9edd8f7dc05e1929e2f65593ca927a1574319df96051ebb8

Download Submit
C:\Users\Admin\AppData\Roaming\owerri\owerrinta.exe
MD5
1f7bccc57d21a4bfeddaafe514cfd74d

SHA1
4dab09179a12468cb1757cb7ca26e06d616b0a8d

SHA256
d4cb7377e8275ed47e499ab0d7ee47167829a5931ba41aa5790593595a7e1061

SHA512
9e639c777dc2d456f038c14efb7cbc871ceb1d7380a74d18fb722a28901357ccb1166c0d883562280e030f0252004ca13a1371ea480d0523c435cd0a6d9f43d8

Download Submit
C:\Users\Admin\AppData\Roaming\owerri\owerrinta.exe
MD5
1f7bccc57d21a4bfeddaafe514cfd74d

SHA1
4dab09179a12468cb1757cb7ca26e06d616b0a8d

SHA256
d4cb7377e8275ed47e499ab0d7ee47167829a5931ba41aa5790593595a7e1061

SHA512
9e639c777dc2d456f038c14efb7cbc871ceb1d7380a74d18fb722a28901357ccb1166c0d883562280e030f0252004ca13a1371ea480d0523c435cd0a6d9f43d8

Download Submit
\Users\Admin\AppData\Roaming\owerri\owerrinta.exe
MD5
1f7bccc57d21a4bfeddaafe514cfd74d

SHA1
4dab09179a12468cb1757cb7ca26e06d616b0a8d

SHA256
d4cb7377e8275ed47e499ab0d7ee47167829a5931ba41aa5790593595a7e1061

SHA512
9e639c777dc2d456f038c14efb7cbc871ceb1d7380a74d18fb722a28901357ccb1166c0d883562280e030f0252004ca13a1371ea480d0523c435cd0a6d9f43d8

Download Submit
memory/284-10-0x0000000000000000-mapping.dmp

Download
memory/284-13-0x00000000025F0000-0x00000000025F4000-memory.dmp

Filesize
16KB

Download
memory/292-3-0x0000000000A50000-0x0000000000A51000-memory.dmp

Filesize
4KB

Download
memory/292-5-0x0000000000320000-0x000000000032E000-memory.dmp

Filesize
56KB

Download
memory/292-6-0x0000000004950000-0x000000000498E000-memory.dmp

Filesize
248KB

Download
memory/292-2-0x00000000748A0000-0x0000000074F8E000-memory.dmp

Filesize
6.9MB

Download
memory/572-16-0x0000000000000000-mapping.dmp

Download
memory/896-9-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/896-8-0x0000000000413FA4-mapping.dmp

Download
memory/896-7-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1008-12-0x0000000000000000-mapping.dmp

Download

Analysis

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