a94b7a55b8644beddee048580b70042329d83ab9cc02d057df6e23c6c2fb5a0f

Analysis

max time kernel
155s
max time network
161s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
04/02/2024, 14:24

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General

Target

2024-02-04_35d2973b8ed7ee8f3766a22990a13148_cryptolocker.exe
Size

45KB
MD5

35d2973b8ed7ee8f3766a22990a13148
SHA1

6cc5466a851beea955124e552d9a7e90de11890e
SHA256

a94b7a55b8644beddee048580b70042329d83ab9cc02d057df6e23c6c2fb5a0f
SHA512

e1cdb58a55ed59f1e85ef7238b169bea73a8714833ff25a9f3799f4cb1fd20f005ce3a4fbe117966d439ff38f7d8b7e047e98e4716cc3f493d8c162fcb8e8579
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X3rtY:V6QFElP6n+gMQMOtEvwDpjyaHaXvY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023145-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023145-12.dat	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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-04_35d2973b8ed7ee8f3766a22990a13148_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4744	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 816 wrote to memory of 4744	816	2024-02-04_35d2973b8ed7ee8f3766a22990a13148_cryptolocker.exe	83
PID 816 wrote to memory of 4744	816	2024-02-04_35d2973b8ed7ee8f3766a22990a13148_cryptolocker.exe	83
PID 816 wrote to memory of 4744	816	2024-02-04_35d2973b8ed7ee8f3766a22990a13148_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-04_35d2973b8ed7ee8f3766a22990a13148_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_35d2973b8ed7ee8f3766a22990a13148_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:816
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4744

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
45KB

MD5
3dda5569d314704f354a033c9f6d47ad

SHA1
cdb370e3fb04fd4e4684777965d4b5b2d705642b

SHA256
36fc0aa9e0c46761bc2a3c794f580d1e9ddb915a90bc083e154600c4a17dac82

SHA512
2bca8cd10a4f8c1e792d7142275e5e9757a4960dcddb99a0185bbbec5103757e8e423b8f39f4aee8c2d4e95a1bc4dff570af96e9b794fc62475f921608a3824d

Download Submit
memory/816-0-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/816-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/816-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4744-17-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4744-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download