e4547a60888b8e1de836734bed92174cb95600f612aa7b517b8a5f15ef19f8ab

Analysis

max time kernel
147s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
11/03/2024, 13:35

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General

Target

2024-03-11_d3d0edf04f19eba3d1405610591fe93a_cryptolocker.exe
Size

44KB
MD5

d3d0edf04f19eba3d1405610591fe93a
SHA1

68efc476b7a1bde63589b3a809f97d3962ce7dfe
SHA256

e4547a60888b8e1de836734bed92174cb95600f612aa7b517b8a5f15ef19f8ab
SHA512

6f8cd79152695e7fabfa8a5d64efb0aa41787b4fc68872d5f18e8b84fd4b155e91fdfaae4f55baef5bd6246cc158cb17117ab4bc25a006bdcbef553fc2b700f1
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHoc/QQJP5K:btB9g/xtCSKfxLIc/y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-11_d3d0edf04f19eba3d1405610591fe93a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4216	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 720 wrote to memory of 4216	720	2024-03-11_d3d0edf04f19eba3d1405610591fe93a_cryptolocker.exe	87
PID 720 wrote to memory of 4216	720	2024-03-11_d3d0edf04f19eba3d1405610591fe93a_cryptolocker.exe	87
PID 720 wrote to memory of 4216	720	2024-03-11_d3d0edf04f19eba3d1405610591fe93a_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-11_d3d0edf04f19eba3d1405610591fe93a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-11_d3d0edf04f19eba3d1405610591fe93a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:720
- 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:4216

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
44KB

MD5
11610c5f009601540de137860c3909dd

SHA1
25be06b3b35f712d87cb988f6d44ad5063071942

SHA256
2e05607238bb52a37b7cf9b7e439576bb9edd96d70859756145a683c62412dea

SHA512
ffbb806d5296c16930fff213841090b34e55d2c126b6b68c583f1449d3e93dc9a3617119b0185f12195882f836d7ed8a555138f47bea24f358583b8897858194

Download Submit
memory/720-0-0x0000000000790000-0x0000000000796000-memory.dmp

Filesize
24KB

Download
memory/720-1-0x0000000000790000-0x0000000000796000-memory.dmp

Filesize
24KB

Download
memory/720-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4216-25-0x0000000001F90000-0x0000000001F96000-memory.dmp

Filesize
24KB

Download