795e42eaf5a5cfe7f8d055e551f7a4539ae79c099faf2ff47cea0192796a6019

Analysis

max time kernel
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/02/2024, 04:35

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General

Target

2024-02-28_278b7bbb7952cf9ccc1061ca2595881e_cryptolocker.exe
Size

60KB
MD5

278b7bbb7952cf9ccc1061ca2595881e
SHA1

bfde1b480d2d83e8614fc941fc4609035a4c1659
SHA256

795e42eaf5a5cfe7f8d055e551f7a4539ae79c099faf2ff47cea0192796a6019
SHA512

b1a2794435d6adfd8807bafafbc8da92f0f99b874e1b8b878e34a812e429eaf63a6e011fa5ff128a3e6cbe6be3fb214895af1f5e6f10c123d04a4b5831cffcca
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHz:btng54SMLr+/AO/kIhfoKMHdm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231a8-12.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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-02-28_278b7bbb7952cf9ccc1061ca2595881e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1228	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 632 wrote to memory of 1228	632	2024-02-28_278b7bbb7952cf9ccc1061ca2595881e_cryptolocker.exe	86
PID 632 wrote to memory of 1228	632	2024-02-28_278b7bbb7952cf9ccc1061ca2595881e_cryptolocker.exe	86
PID 632 wrote to memory of 1228	632	2024-02-28_278b7bbb7952cf9ccc1061ca2595881e_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-28_278b7bbb7952cf9ccc1061ca2595881e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-28_278b7bbb7952cf9ccc1061ca2595881e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:632
- 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:1228

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
60KB

MD5
8a679e187e0283beaf070502cea96160

SHA1
a3320f0a62454e69239e8c8a899e030e3af532b6

SHA256
0719f31fbe1e18587a1827519826d9992da250aa45b242ba0983e86f1ec9d663

SHA512
5b6914b3ac7563b43f1b089d74f63d93770b419938085b67ce0933cdb7d2619a8af0d8cb18f1cd29eb07b4bd9c734ed9713bba6064aec8bf3483d77748ecde57

Download Submit
memory/632-0-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/632-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/632-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1228-22-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download