5b26f7cbba79d635cee908a77151a297761cd5e2e963bd76f0327b6a7b485397

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 05:23

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe
Size

39KB
MD5

111f3fc5e97ea646e0dc1c7c8ba2865f
SHA1

5f28905cf774dfdb24372fa3f7c09a1a6bdbf4e0
SHA256

5b26f7cbba79d635cee908a77151a297761cd5e2e963bd76f0327b6a7b485397
SHA512

c90cd6d7b09f2dd9dcc89a3231ee7ded06ca55bebc9f3c0e6c29a47a7e7d9dd2bb207f55cf140cf9d7e6c9d7b2d52b1726db9f4279dde4a7867ab68fa75d4ffe
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLNWR:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/376-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b5f-13.dat	CryptoLocker_rule2
behavioral2/memory/376-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/376-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c000000023b5f-13.dat	CryptoLocker_set1
behavioral2/memory/376-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-877519540-908060166-1852957295-1000\Control Panel\International\Geo\Nation	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1472	asih.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 376 wrote to memory of 1472	376	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe	83
PID 376 wrote to memory of 1472	376	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe	83
PID 376 wrote to memory of 1472	376	2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_111f3fc5e97ea646e0dc1c7c8ba2865f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:376
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1472

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
40KB

MD5
65e86cbdb7c178f3be5d4f1ed5ef19f1

SHA1
83d5baabe80114b2a78c4ffce57f09fe051f48c1

SHA256
4d1e00dd1a6448fb6e098d45b4cb4ff9bbf53d9c9c6c0055d3f169d24b3f4a45

SHA512
8b5659dc368212e9000a3365fa17b411752abf14bbfe1b2510e391bd26c858b232abb033f7d8a726e19bbe003568ec4ba744377981176b786ae075b157b23e52

Download Submit
memory/376-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/376-1-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/376-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/376-9-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/376-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1472-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1472-25-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download