5981156cb99a0d0209a84bb51721a0389ece2a59fb264dc9ca6c604782cadfce

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 19:30

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General

Target

2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe
Size

45KB
MD5

42f5c7a35d6765a3fa93e0d215249c21
SHA1

440fd2abc7c4e3bbd2072f66af6c03a141526799
SHA256

5981156cb99a0d0209a84bb51721a0389ece2a59fb264dc9ca6c604782cadfce
SHA512

2c432e071d128cc819fd71d1ea9d0f744a694266e659faa670948aa6b1e92895e16e48c9d5c30030ec8cab6dbb5ab9f5e0b67d8231c56d0aaf1fde5c4c3f1ab5
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedm+My1j5B:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1644-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000b00000001e597-13.dat	CryptoLocker_rule2
behavioral2/memory/1644-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1644-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000b00000001e597-13.dat	CryptoLocker_set1
behavioral2/memory/1644-17-0x0000000000500000-0x000000000050B000-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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3536	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 1644 wrote to memory of 3536	1644	2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe	90
PID 1644 wrote to memory of 3536	1644	2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe	90
PID 1644 wrote to memory of 3536	1644	2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_42f5c7a35d6765a3fa93e0d215249c21_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3536

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\asih.exe

Filesize
46KB

MD5
a1905a3f386322bf5573c3621ddd7e37

SHA1
d6fa9205e2b081ad251ea53bfad535fb4aa3f93a

SHA256
3e28c1e5083b091b7d2b7cec0463ac5fa6deba753296fd774c40a5dcef1150a7

SHA512
5a4844dfb6e8439dc212693cae8f492022bfeeb9dcfaefe53be6b5645b97067967ed94f9f1ff0716ce2112d4aba8052635b26386f1a638c875d8ae83a5678609

Download Submit
memory/1644-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1644-1-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/1644-2-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/1644-3-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1644-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3536-20-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download
memory/3536-19-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download