9e80458fb07a6188db29019dbf2de00e8aed4f8db50916d5a5c027448a1d5f1b

Analysis

max time kernel
131s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
26/05/2024, 02:47

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General

Target

2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe
Size

41KB
MD5

f13461eca4f8ab8d57209349123049f1
SHA1

d1d9c873e904bde081f73f41fa76ff6a2afdf6b0
SHA256

9e80458fb07a6188db29019dbf2de00e8aed4f8db50916d5a5c027448a1d5f1b
SHA512

ab750ab4e1c1bf8a703500b36ff0a49390636fa86ec68364a7c22ddd5154f348ae7635f856acaabd684d6efe7633bb30871cd9b910e1c806e2ae9e298b75ed02
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/EZCz:btB9g/WItCSsAGjX7e9N0hunKLYW+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233f6-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
440	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 4596 wrote to memory of 440	4596	2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe	83
PID 4596 wrote to memory of 440	4596	2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe	83
PID 4596 wrote to memory of 440	4596	2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-26_f13461eca4f8ab8d57209349123049f1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4596
- 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:440

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
41KB

MD5
7161631132d7fe20a674abf6730f2091

SHA1
b04e02f250ad3757de529174e8d640c241a3839b

SHA256
88126198d0fe0981753be47d88ed8af3b4d0b168a7d5ebca5ae2ed3b7be112e7

SHA512
3d0f8327e152f4b90049fb1998beaa1151e53fde950d79db3c160cf562598017a4dce2d145e0e9a8ede75ef0948334318b1636572e82e3b8be640295c24ddeb4

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
36066ea0dda8904891cb28ad064f6f5e

SHA1
f554e604f7782e108eb073c4f7bf11c6b79e2182

SHA256
dbb4956e40827acd0e2816fb0556d46311aea7566b8040b1d6ad287679cd964e

SHA512
e342c3007a80dce5798233e295e7b9f3bcfb393952dfea3d60501a86ff902d45645b665251f53fb4c527c38464b09393260ec82bec1ec8b76fbc04447f34038e

Download Submit
memory/440-25-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4596-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4596-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4596-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download