remcos | 5a2314605b700448ff70f6c4d6ade0f1b58b189c6c84644aa2f1735ded273722

General

Target

a8d2835744bc534fde4454950d13a766.exe
Size

642KB
MD5

a8d2835744bc534fde4454950d13a766
SHA1

1ea8e8f5077be2d017d8c090652be895b47f8700
SHA256

5a2314605b700448ff70f6c4d6ade0f1b58b189c6c84644aa2f1735ded273722
SHA512

431bcfa7b6816e58030d3cc098e27767fc13a7b2af2df49f2ca1489614989cf121a90ea45b5aa1e58d5594229c58c95c3704c8f64e21bfc82eb9e06789e0447f

Score

10^/10

remcos sara rat

Malware Config

Extracted

Family

remcos

Version

2.7.0 Pro

Botnet

SARA

C2

sara.con-ip.com:2002

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
false
install_flag
false
install_path
%AppData%
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
keylog_path
%AppData%
mouse_option
false
mutex
Remcos-YV35QX
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
wikipedia;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:

a8d2835744bc534fde4454950d13a766.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	a8d2835744bc534fde4454950d13a766.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a8d2835744bc534fde4454950d13a766.exe

description pid process target process

PID 3324 set thread context of 1748 3324 a8d2835744bc534fde4454950d13a766.exe RegSvcs.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1596 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

a8d2835744bc534fde4454950d13a766.exe

pid process

3324 a8d2835744bc534fde4454950d13a766.exe
3324 a8d2835744bc534fde4454950d13a766.exe
3324 a8d2835744bc534fde4454950d13a766.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

a8d2835744bc534fde4454950d13a766.exe

description pid process

Token: SeDebugPrivilege 3324 a8d2835744bc534fde4454950d13a766.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegSvcs.exe

pid process

1748 RegSvcs.exe

description	pid	process	target process
PID 3324 set thread context of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe

pid	process
1596	schtasks.exe

pid	process
3324	a8d2835744bc534fde4454950d13a766.exe
3324	a8d2835744bc534fde4454950d13a766.exe
3324	a8d2835744bc534fde4454950d13a766.exe

description	pid	process
Token: SeDebugPrivilege	3324	a8d2835744bc534fde4454950d13a766.exe

pid	process
1748	RegSvcs.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

a8d2835744bc534fde4454950d13a766.exe

description	pid	process	target process
PID 3324 wrote to memory of 1596	3324	a8d2835744bc534fde4454950d13a766.exe	schtasks.exe
PID 3324 wrote to memory of 1596	3324	a8d2835744bc534fde4454950d13a766.exe	schtasks.exe
PID 3324 wrote to memory of 1596	3324	a8d2835744bc534fde4454950d13a766.exe	schtasks.exe
PID 3324 wrote to memory of 456	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 456	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 456	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe
PID 3324 wrote to memory of 1748	3324	a8d2835744bc534fde4454950d13a766.exe	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\a8d2835744bc534fde4454950d13a766.exe
"C:\Users\Admin\AppData\Local\Temp\a8d2835744bc534fde4454950d13a766.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3324

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\UmpuopOOFeJJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDA38.tmp"
2⤵
- Creates scheduled task(s)
PID:1596

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
PID:456

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
2⤵
- Suspicious use of SetWindowsHookEx
PID:1748

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpDA38.tmp
Filesize
1KB

MD5
ca93d08169dc5d678917e6b17d2412c7

SHA1
4cc2c87c1f2d67c6936120151d38128a51b71703

SHA256
cc7d9161a532c0bad943370ed032c4ca48883f87e8b690cad413ac8a031e799a

SHA512
0b66691fac5ce905f47cc6f4f22ea950651549868aad60d4665d41f3b09cc865990f6b2def93adbc54a72878fcffd644753a47acb3cfce1bd83494f4a53d2075

Download Submit
memory/456-137-0x0000000000000000-mapping.dmp

Download
memory/1596-135-0x0000000000000000-mapping.dmp

Download
memory/1748-139-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1748-138-0x0000000000000000-mapping.dmp

Download
memory/1748-141-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1748-142-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/1748-143-0x0000000000400000-0x0000000000421000-memory.dmp

Filesize
132KB

Download
memory/3324-134-0x00000000052E0000-0x00000000052EA000-memory.dmp

Filesize
40KB

Download
memory/3324-133-0x0000000005400000-0x000000000549C000-memory.dmp

Filesize
624KB

Download
memory/3324-132-0x0000000005360000-0x00000000053F2000-memory.dmp

Filesize
584KB

Download
memory/3324-131-0x0000000005870000-0x0000000005E14000-memory.dmp

Filesize
5.6MB

Download
memory/3324-130-0x0000000000890000-0x0000000000936000-memory.dmp

Filesize
664KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads