remcos | eb91bf1e2eb3877f0942cef113bb0fb76e2c2fd2c2651dbf09f6da6df649e8fb

General

Target

972334f0c55d0aeab0b32efe41ea3470.exe
Size

718KB
MD5

972334f0c55d0aeab0b32efe41ea3470
SHA1

e9097b5cd1f976ecaf0accedf14f1d22bd72e6fa
SHA256

eb91bf1e2eb3877f0942cef113bb0fb76e2c2fd2c2651dbf09f6da6df649e8fb
SHA512

df120f43fa17b2c37ad6d31e528495241146420cd017c18116bd074498cef3834f408c50d289f8bdce2955c464664a6c446800cb7b55c1461fb3cc0accc7fe10

Score

10^/10

remcos 06192022 persistence rat

Malware Config

Extracted

Family

remcos

Botnet

06192022

C2

nikahuve.ac.ug:6968

kalskala.ac.ug:6968

tuekisaa.ac.ug:6968

parthaha.ac.ug:6968

Attributes

audio_folder
MicRecords
audio_path
%AppData%
audio_record_time
5
connect_delay
0
connect_interval
1
copy_file
remcos.exe
copy_folder
Remcos
delete_file
false
hide_file
false
hide_keylog_file
true
install_flag
false
install_path
%AppData%
keylog_crypt
true
keylog_file
scxs.dat
keylog_flag
false
keylog_folder
forbas
keylog_path
%AppData%
mouse_option
false
mutex
cvxyttydfsgbghfgfhtd-RXTSAM
screenshot_crypt
false
screenshot_flag
false
screenshot_folder
Screenshots
screenshot_path
%AppData%
screenshot_time
10
startup_value
Remcos
take_screenshot_option
false
take_screenshot_time
5
take_screenshot_title
notepad;solitaire;

Signatures

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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

972334f0c55d0aeab0b32efe41ea3470.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	972334f0c55d0aeab0b32efe41ea3470.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

972334f0c55d0aeab0b32efe41ea3470.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Qerdo = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ppjollp\\Qerdo.exe\""	972334f0c55d0aeab0b32efe41ea3470.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

972334f0c55d0aeab0b32efe41ea3470.exe

description pid process target process

PID 2068 set thread context of 4896 2068 972334f0c55d0aeab0b32efe41ea3470.exe InstallUtil.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exe972334f0c55d0aeab0b32efe41ea3470.exe

pid process

4324 powershell.exe
4324 powershell.exe
2068 972334f0c55d0aeab0b32efe41ea3470.exe
2068 972334f0c55d0aeab0b32efe41ea3470.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

972334f0c55d0aeab0b32efe41ea3470.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2068 972334f0c55d0aeab0b32efe41ea3470.exe
Token: SeDebugPrivilege 4324 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

4896 InstallUtil.exe

description	pid	process	target process
PID 2068 set thread context of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe

pid	process
4324	powershell.exe
4324	powershell.exe
2068	972334f0c55d0aeab0b32efe41ea3470.exe
2068	972334f0c55d0aeab0b32efe41ea3470.exe

description	pid	process
Token: SeDebugPrivilege	2068	972334f0c55d0aeab0b32efe41ea3470.exe
Token: SeDebugPrivilege	4324	powershell.exe

pid	process
4896	InstallUtil.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

972334f0c55d0aeab0b32efe41ea3470.exe

description	pid	process	target process
PID 2068 wrote to memory of 4324	2068	972334f0c55d0aeab0b32efe41ea3470.exe	powershell.exe
PID 2068 wrote to memory of 4324	2068	972334f0c55d0aeab0b32efe41ea3470.exe	powershell.exe
PID 2068 wrote to memory of 4324	2068	972334f0c55d0aeab0b32efe41ea3470.exe	powershell.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe
PID 2068 wrote to memory of 4896	2068	972334f0c55d0aeab0b32efe41ea3470.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\972334f0c55d0aeab0b32efe41ea3470.exe
"C:\Users\Admin\AppData\Local\Temp\972334f0c55d0aeab0b32efe41ea3470.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwADsAIABTAGUAdAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAGEAdABoACAAJwBDADoAXAAnAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4324

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Suspicious use of SetWindowsHookEx
PID:4896

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

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2068-130-0x00000000006F0000-0x00000000007AA000-memory.dmp

Filesize
744KB

Download
memory/2068-131-0x0000000005610000-0x0000000005BB4000-memory.dmp

Filesize
5.6MB

Download
memory/2068-149-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/4324-142-0x00000000707F0000-0x000000007083C000-memory.dmp

Filesize
304KB

Download
memory/4324-144-0x0000000007770000-0x000000000777A000-memory.dmp

Filesize
40KB

Download
memory/4324-135-0x0000000005B50000-0x0000000005B72000-memory.dmp

Filesize
136KB

Download
memory/4324-136-0x0000000005CF0000-0x0000000005D56000-memory.dmp

Filesize
408KB

Download
memory/4324-137-0x0000000005D60000-0x0000000005DC6000-memory.dmp

Filesize
408KB

Download
memory/4324-138-0x00000000063F0000-0x000000000640E000-memory.dmp

Filesize
120KB

Download
memory/4324-139-0x0000000007A50000-0x00000000080CA000-memory.dmp

Filesize
6.5MB

Download
memory/4324-140-0x00000000068E0000-0x00000000068FA000-memory.dmp

Filesize
104KB

Download
memory/4324-141-0x0000000007630000-0x0000000007662000-memory.dmp

Filesize
200KB

Download
memory/4324-133-0x0000000002AB0000-0x0000000002AE6000-memory.dmp

Filesize
216KB

Download
memory/4324-143-0x0000000007610000-0x000000000762E000-memory.dmp

Filesize
120KB

Download
memory/4324-134-0x00000000054C0000-0x0000000005AE8000-memory.dmp

Filesize
6.2MB

Download
memory/4324-145-0x0000000007980000-0x0000000007A16000-memory.dmp

Filesize
600KB

Download
memory/4324-146-0x0000000007920000-0x000000000792E000-memory.dmp

Filesize
56KB

Download
memory/4324-147-0x00000000080D0000-0x00000000080EA000-memory.dmp

Filesize
104KB

Download
memory/4324-148-0x0000000007970000-0x0000000007978000-memory.dmp

Filesize
32KB

Download
memory/4324-132-0x0000000000000000-mapping.dmp

Download
memory/4896-150-0x0000000000000000-mapping.dmp

Download
memory/4896-151-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/4896-152-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/4896-153-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/4896-154-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download
memory/4896-155-0x0000000000400000-0x000000000047B000-memory.dmp

Filesize
492KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads