bbfe0e086946fa1590cffa47e66cdd5ba18f019cb03c09f292170062b4c91453

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19/02/2024, 08:24

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General

Target

2024-02-19_0f96b84d0cb79ae483b8b292a8dd5a30_cryptolocker.exe
Size

57KB
MD5

0f96b84d0cb79ae483b8b292a8dd5a30
SHA1

a18db6d34fcb84594692b8b34654a1c1045be761
SHA256

bbfe0e086946fa1590cffa47e66cdd5ba18f019cb03c09f292170062b4c91453
SHA512

1a4e77db62cf678a1014428f072058a729b73f16f083103cf9b6086718fbb461408e6fb878c69b9c5089eedc308c24899c7104e42fd84123c93bdedea0bf3dd6
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHc:btng54SMLr+/AO/kIhfoKMHdt

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023203-12.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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-02-19_0f96b84d0cb79ae483b8b292a8dd5a30_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1128	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 4848 wrote to memory of 1128	4848	2024-02-19_0f96b84d0cb79ae483b8b292a8dd5a30_cryptolocker.exe	84
PID 4848 wrote to memory of 1128	4848	2024-02-19_0f96b84d0cb79ae483b8b292a8dd5a30_cryptolocker.exe	84
PID 4848 wrote to memory of 1128	4848	2024-02-19_0f96b84d0cb79ae483b8b292a8dd5a30_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_0f96b84d0cb79ae483b8b292a8dd5a30_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_0f96b84d0cb79ae483b8b292a8dd5a30_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4848
- 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:1128

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
57KB

MD5
a4b9cc9deed384923d12a7e582ac6922

SHA1
2df7141f208e2be9b0b3ef874f7e001033bb4835

SHA256
8e105d8e25d7a6496b3fa5fdeaf49c21b0ff6e12f27f1bf7489c9af329628906

SHA512
5abbd9025f0e27831ae53d8404b26f0a823dd854631ed652a98828ee7dedac88197d98fdcd817998e578eaae2b7e1ca6ae87c9e5a2e3f1dbd911223601fe4a25

Download Submit
memory/1128-20-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4848-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4848-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4848-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download