e3b0d59b24d7b6d74cf9f1e870e5e4e54d0388b586c6c54bb41fcab8a9bc4e35

Analysis

max time kernel
102s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14-02-2024 13:52

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General

Target

2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe
Size

37KB
MD5

a3dd7235c8f82a42c6834142dc443560
SHA1

0479ab0ca810161f8ff914a75ae66e3104bb9092
SHA256

e3b0d59b24d7b6d74cf9f1e870e5e4e54d0388b586c6c54bb41fcab8a9bc4e35
SHA512

33108d25ec4b8b4cb5c25427021b347ef119a96e0654d540e53fc6237dc7f18df250aaf7433a716e1c855acff8aa17f6bb7d19b97226c7d6d2a40685db815aa6
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXuni8LB0P:btB9g/WItCSsAGjX7e9N0hunLOP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f9-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4048	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 5000 wrote to memory of 4048	5000	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe	85
PID 5000 wrote to memory of 4048	5000	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe	85
PID 5000 wrote to memory of 4048	5000	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5000
- 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:4048

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
37KB

MD5
c99b23f53a288a1349bda1e697d9155a

SHA1
a87de306c5dba73f3df14fac1875f0c10349151c

SHA256
cffc9acd08dee7700abbbd9a8f17bb540bcd89cc59f1b2802f2e245c36cbacc8

SHA512
bf1697cfe8856abe613da0e2eaf6f97d13b0ad8f86a929d12df25171d993240813464b6de05e5e9c96e776dd449661ea31d917b00756f7ef41ab7fb16ff8ab31

Download Submit
memory/4048-25-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/5000-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/5000-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/5000-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download