purecrypter | 4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a

General

Target

4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe
Size

6KB
MD5

679104fb0479ff61c4b5e4b88f77d94b
SHA1

bfbcb5d48fb4ab25d52e4e1bedf37a4e7a4a3cab
SHA256

4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a
SHA512

7cb36200865267885939956614a7b8603cd16575a3857e0ecc238ff22d296b29bfb208bb11f61f3856278f6b4585afdb2c8456d2f2630f0fbc33fa298df0253e
SSDEEP

192:zU3efq7iEM9gdH98dfQbLE5lF22vjWwID:Q3efq7iEM9gdH98dfgLE5lI2vjlI

Score

10^/10

purecrypter remcos remotehost downloader loader persistence rat

Malware Config

Extracted

Family

purecrypter

C2

https://onedrive.live.com/download?cid=A113DD34A0D77810&resid=A113DD34A0D77810%21125&authkey=AIgE8y9D-kUp_qA

Extracted

Family

remcos

Botnet

RemoteHost

C2

top.thekillforabuse1.xyz:1068

Attributes

audio_folder
MicRecords
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
keylog_crypt
false
keylog_file
logs.dat
keylog_flag
false
keylog_folder
remcos
mouse_option
false
mutex
Rmc-R762FE
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

Signatures

PureCrypter
PureCrypter is a .NET malware loader first seen in early 2021.
loader downloader purecrypter
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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Romgl = "\"C:\\Users\\Admin\\AppData\\Roaming\\Taaewqbiqv\\Romgl.exe\""	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3640 set thread context of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92

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 2 IoCs

pid	Process
1660	powershell.exe
1660	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe
Token: SeDebugPrivilege	1660	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3640 wrote to memory of 1660	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	86
PID 3640 wrote to memory of 1660	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	86
PID 3640 wrote to memory of 1660	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	86
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92
PID 3640 wrote to memory of 4124	3640	4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe	92

C:\Users\Admin\AppData\Local\Temp\4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe
"C:\Users\Admin\AppData\Local\Temp\4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3640
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ENC cwB0AGEAcgB0AC0AcwBsAGUAZQBwACAALQBzAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1660
- C:\Users\Admin\AppData\Local\Temp\4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe
  C:\Users\Admin\AppData\Local\Temp\4134bd82bbea78103d0e32728df856870eaa2c0188b59423115c7d779b2bf83a.exe
  2⤵
  PID:4124

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

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Downloads

memory/1660-140-0x00000000076E0000-0x0000000007D5A000-memory.dmp

Filesize
6.5MB

Download
memory/1660-141-0x0000000006350000-0x000000000636A000-memory.dmp

Filesize
104KB

Download
memory/1660-135-0x00000000048F0000-0x0000000004926000-memory.dmp

Filesize
216KB

Download
memory/1660-136-0x0000000004F60000-0x0000000005588000-memory.dmp

Filesize
6.2MB

Download
memory/1660-137-0x0000000005770000-0x00000000057D6000-memory.dmp

Filesize
408KB

Download
memory/1660-139-0x0000000005E70000-0x0000000005E8E000-memory.dmp

Filesize
120KB

Download
memory/1660-138-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/3640-132-0x0000000000FC0000-0x0000000000FC8000-memory.dmp

Filesize
32KB

Download
memory/3640-133-0x0000000007320000-0x0000000007342000-memory.dmp

Filesize
136KB

Download
memory/4124-143-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-144-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-145-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-146-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download
memory/4124-147-0x0000000000400000-0x000000000047F000-memory.dmp

Filesize
508KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads