602a439545209af276c2bcdae620ac64fbcb4036083d9e77fe7efa65ba5cb22b

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 04:33

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General

Target

2024-05-09_4fe0921020d6a7ebe11456fcd0a25a2a_cryptolocker.exe
Size

62KB
MD5

4fe0921020d6a7ebe11456fcd0a25a2a
SHA1

73eb9786695bc258395aa37b08cb0184cbd144c3
SHA256

602a439545209af276c2bcdae620ac64fbcb4036083d9e77fe7efa65ba5cb22b
SHA512

50f9649a3e7673c209efc2408a338d4b94ce1c307267ca81a18a3db189597b51345e8709e7eaba24f5300dab677ff951e9e34f39c03c195ae134c38c29f169b4
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnF7HT:btng54SMLr+/AO/kIhfoKMHda9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.dat	CryptoLocker_rule2

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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-09_4fe0921020d6a7ebe11456fcd0a25a2a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4404	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 1404 wrote to memory of 4404	1404	2024-05-09_4fe0921020d6a7ebe11456fcd0a25a2a_cryptolocker.exe	82
PID 1404 wrote to memory of 4404	1404	2024-05-09_4fe0921020d6a7ebe11456fcd0a25a2a_cryptolocker.exe	82
PID 1404 wrote to memory of 4404	1404	2024-05-09_4fe0921020d6a7ebe11456fcd0a25a2a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_4fe0921020d6a7ebe11456fcd0a25a2a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_4fe0921020d6a7ebe11456fcd0a25a2a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:4404

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

Replay Monitor

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Downloads

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

Filesize
62KB

MD5
f178b5fd21fc08784dcd67ce9902fe50

SHA1
45dd2f356454cf723d9bb89dd97b4f128ddbade0

SHA256
176e8b58bc10e7a9878e83b111fb40f241464f29f4dcba0223954ad551fae101

SHA512
87bbf7a77ae3ab5bba2e2068d21879610ce3df91e9296974378a578d72e55cd7c444700d1b65176b3f1592a587457c2cf941e39593a448e539a1ddc2feba8b71

Download Submit
memory/1404-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1404-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1404-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4404-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download