remcos | 210d63272f04545a7b964c5712b0157a9e9801500e063a15ecee4b2de2c87254

General

Target

doc_07621DERG7011220213300.exe
Size

1.1MB
MD5

3295f12e797cd867575617f57c091b42
SHA1

e399c5bc013640afc56f21e19f45e971696f92f2
SHA256

210d63272f04545a7b964c5712b0157a9e9801500e063a15ecee4b2de2c87254
SHA512

a6e85e0f6095e00fd37af065c47892e025b59a0c63c62b3d33802565d5b2ca8c50caf0268a7fdd36b69847ecef2ae4e6a0e0310528b0de0fbad9cc6609831c8b

Score

10^/10

remcos persistence rat

Malware Config

Extracted

Family

remcos

C2

www.swqrn.com:16108

Signatures

Remcos
Remcos is a closed-source remote control and surveillance software.
rat remcos

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

doc_07621DERG7011220213300.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\Aivjxn = "C:\\Users\\Public\\Libraries\\nxjviA.url"	doc_07621DERG7011220213300.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

doc_07621DERG7011220213300.exe

description	ioc	process
File opened (read-only)	\??\X:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\Z:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\A:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\H:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\V:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\R:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\U:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\E:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\L:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\O:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\J:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\M:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\Q:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\S:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\T:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\B:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\G:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\I:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\Y:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\P:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\W:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\F:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\K:	doc_07621DERG7011220213300.exe
File opened (read-only)	\??\N:	doc_07621DERG7011220213300.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

doc_07621DERG7011220213300.exe

description pid process target process

PID 1084 set thread context of 968 1084 doc_07621DERG7011220213300.exe doc_07621DERG7011220213300.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

doc_07621DERG7011220213300.exe

pid process

968 doc_07621DERG7011220213300.exe

description	pid	process	target process
PID 1084 set thread context of 968	1084	doc_07621DERG7011220213300.exe	doc_07621DERG7011220213300.exe

pid	process
968	doc_07621DERG7011220213300.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

doc_07621DERG7011220213300.exe

description	pid	process	target process
PID 1084 wrote to memory of 968	1084	doc_07621DERG7011220213300.exe	doc_07621DERG7011220213300.exe
PID 1084 wrote to memory of 968	1084	doc_07621DERG7011220213300.exe	doc_07621DERG7011220213300.exe
PID 1084 wrote to memory of 968	1084	doc_07621DERG7011220213300.exe	doc_07621DERG7011220213300.exe
PID 1084 wrote to memory of 968	1084	doc_07621DERG7011220213300.exe	doc_07621DERG7011220213300.exe
PID 1084 wrote to memory of 968	1084	doc_07621DERG7011220213300.exe	doc_07621DERG7011220213300.exe
PID 1084 wrote to memory of 968	1084	doc_07621DERG7011220213300.exe	doc_07621DERG7011220213300.exe

C:\Users\Admin\AppData\Local\Temp\doc_07621DERG7011220213300.exe
"C:\Users\Admin\AppData\Local\Temp\doc_07621DERG7011220213300.exe"
1⤵
- Adds Run key to start application
- Enumerates connected drives
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1084

C:\Users\Admin\AppData\Local\Temp\doc_07621DERG7011220213300.exe
C:\Users\Admin\AppData\Local\Temp\doc_07621DERG7011220213300.exe
2⤵
- Suspicious use of SetWindowsHookEx
PID:968

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Peripheral Device Discovery

1

T1120

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/968-61-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/968-62-0x000000000042F08F-mapping.dmp

Download
memory/968-64-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/1084-59-0x00000000752F1000-0x00000000752F3000-memory.dmp

Filesize
8KB

Download
memory/1084-60-0x00000000001B0000-0x00000000001B1000-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