af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c

Analysis

max time kernel
95s
max time network
169s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
25/06/2022, 17:36

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General

Target
af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c.exe
Size 337KB
Sample220625-v62dvsfhc6
SHA256 af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c
MD5 0f225c6aa5b8512ff600dcff94f93e08
SHA1 cb3bb07396098736594ae7de9ce76e2b7ddbffa0
SHA512 48f09d2853e9712cd477a5abfabaac67e80b3e6e11fa8379e9162a9c7ab70edc9c43e5be2c03416727a78b952c304f6a75fb17e9b2862b1548411168bb4c8c4d
MD5 SHA1 SHA512

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
4516	start.exe

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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c.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 2 IoCs

pid	Process
4516	start.exe
4516	start.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
4516	start.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3908 wrote to memory of 4516	3908	af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c.exe	80
PID 3908 wrote to memory of 4516	3908	af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c.exe	80
PID 3908 wrote to memory of 4516	3908	af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c.exe	80

C:\Users\Admin\AppData\Local\Temp\af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c.exe
"C:\Users\Admin\AppData\Local\Temp\af28c39a5ae5a0f2dfb473becc8ee4050b1b0e71d3d0444157e2529720335e5c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3908
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\start.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\start.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of FindShellTrayWindow
  PID:4516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

start.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\start.exe
Size 41KB
SHA256 27d22e2fb09e101ec13d9dc16bf743d6a49111c3205ea9127d1733696c3afbe1
MD5 2b736720e2c2674b8037a03266574048
SHA1 b0fccf6893442467f1c8a7f05783d1f1ea27fa74
SHA512 70c6458db107dc7254abc61508f014fe40f11a733d043cc1388113ef2887dcb666656d65a51d61fa65fff25ede393e4a99bf6a9976a895255f5807e57abfad94
SSDEEP 768:SvEAd5WmLMO06JJT3ADF0+qH/f0WTt6FSkKYf6R08:SvEBmLRTR+qH/f0DSxBR08
MD5 SHA1 SHA512 SSDEEP

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start.exe

Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\start.exe
Size 41KB
SHA256 27d22e2fb09e101ec13d9dc16bf743d6a49111c3205ea9127d1733696c3afbe1
MD5 2b736720e2c2674b8037a03266574048
SHA1 b0fccf6893442467f1c8a7f05783d1f1ea27fa74
SHA512 70c6458db107dc7254abc61508f014fe40f11a733d043cc1388113ef2887dcb666656d65a51d61fa65fff25ede393e4a99bf6a9976a895255f5807e57abfad94
SSDEEP 768:SvEAd5WmLMO06JJT3ADF0+qH/f0WTt6FSkKYf6R08:SvEBmLRTR+qH/f0DSxBR08
MD5 SHA1 SHA512 SSDEEP

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