599af782bd37c05ffa98098cdcb02f023b141e27f81ca00db7bef411629b95ab

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 13:24

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General

Target

2024-03-25_0f226b9422d1371d55cdd39ef9ebbb5c_cryptolocker.exe
Size

35KB
MD5

0f226b9422d1371d55cdd39ef9ebbb5c
SHA1

00b77441345deb43076bf375827c7abf352b31a4
SHA256

599af782bd37c05ffa98098cdcb02f023b141e27f81ca00db7bef411629b95ab
SHA512

0c73ee4ca97018747ca8f456cd968f5f2da2c98852dccd862562caa7ae717c88368f2718fe5f3520f3ef637f231c8fc676a748cec9ce493f8d286816a8687d1f
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0q8ZUBO1:btB9g/WItCSsAGjX7r3BTGSQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-25_0f226b9422d1371d55cdd39ef9ebbb5c_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4792	gewos.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 4792	4076	2024-03-25_0f226b9422d1371d55cdd39ef9ebbb5c_cryptolocker.exe	91
PID 4076 wrote to memory of 4792	4076	2024-03-25_0f226b9422d1371d55cdd39ef9ebbb5c_cryptolocker.exe	91
PID 4076 wrote to memory of 4792	4076	2024-03-25_0f226b9422d1371d55cdd39ef9ebbb5c_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-25_0f226b9422d1371d55cdd39ef9ebbb5c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_0f226b9422d1371d55cdd39ef9ebbb5c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
35KB

MD5
b1df78f72410c55369100b471180d7b2

SHA1
77c4c36a082058dd894106b75784d33a43b5e17e

SHA256
024eb53f64e80705ec9c941a59b3d15e1355106ea1425b0dd24053e5838ec245

SHA512
bc0d20ae374cee61caf6aaf2224681c0c038151f29073890148259e6d49b240c745dc64488c42ed34c1ba4d19efba81a0e93201cdf448fcf06143d8767da0255

Download Submit
memory/4076-1-0x00000000022A0000-0x00000000022A6000-memory.dmp

Filesize
24KB

Download
memory/4076-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4076-0-0x00000000022A0000-0x00000000022A6000-memory.dmp

Filesize
24KB

Download
memory/4792-20-0x0000000002D50000-0x0000000002D56000-memory.dmp

Filesize
24KB

Download