3164eeb56c120fad3a999d9aaf02c2594d6887a5ba4e3b24209595c9c373ea43

Analysis

max time kernel
130s
max time network
124s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 20:51

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General

Target

2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe
Size

36KB
MD5

2ba4ef6cf10ade7b5b7bbe7d5526af87
SHA1

72819e5e5b0d0c0800db0c595de8387a711c3226
SHA256

3164eeb56c120fad3a999d9aaf02c2594d6887a5ba4e3b24209595c9c373ea43
SHA512

4d7cc8fa454481cd53651e0da97ae359b03569d993cb481cb131102f6effe2b2b10df740536f5c762fdc6a912127037ca00e4191d36d36d089dbcf76acb53720
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qG1H2:btB9g/WItCSsAGjX7r3BTa2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\gewos.exe	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

Processes:

2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exegewos.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

Processes:

gewos.exe

pid process

4928 gewos.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4928	gewos.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe

description	pid	process	target process
PID 1168 wrote to memory of 4928	1168	2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe	gewos.exe
PID 1168 wrote to memory of 4928	1168	2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe	gewos.exe
PID 1168 wrote to memory of 4928	1168	2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe	gewos.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_2ba4ef6cf10ade7b5b7bbe7d5526af87_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1168
- 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:4928

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
36KB

MD5
021bc7bbc8d688033b295d124d1e07a7

SHA1
0544d9bc6c39c7ddbfdba2ac18c5338589cc337a

SHA256
16834a7f162308874dc4ecba03bc42b1a9b2836a7ad83bc19a433b76eab3a12f

SHA512
d56a14f76cf58b30a177a65d4a0113d565b579ee7eb3010fdbcb7242550b5ee5c2f2f99440e11fdecc26441116b48b2a3e1b8b99b75d44479407f94886ed5c4e

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

Filesize
185B

MD5
cb3c5b2eec7b4b39982ac80d4c399c94

SHA1
fa286c81d31db69e879585624b4a5125142032cb

SHA256
c0047e912563ffb8c310db0ac999b546d0f67356e9a494ff63b4f48ada2606e5

SHA512
a8ce0c200d552da39049bdae2a5d56908493a6be8957b3c1808d90c1ec7db7c7b440b9958a8819f0dbe1a7ade3dc907c65e17415caa495cd5b1f9862917cc31c

Download Submit
memory/1168-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/1168-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1168-8-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4928-25-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download