81720a514148226d11e12c3e83082b2dfcc58be2d22dd884c1c3a93dd36ce20d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 09:32

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General

Target

2024-04-19_89dcd86a8274b6dbb2bac80bcb57f0f2_cryptolocker.exe
Size

100KB
MD5

89dcd86a8274b6dbb2bac80bcb57f0f2
SHA1

94dac076696164d2b967cb3ae99aaee4ea0c2022
SHA256

81720a514148226d11e12c3e83082b2dfcc58be2d22dd884c1c3a93dd36ce20d
SHA512

50e780fdd57fc51593717e3192ef1f089628170bf067035c14e95b13be6d1050d06bf0f872e01142493cff1ef819297bb2f9eaba1dc7898e1ab56d9d7a63700b
SSDEEP

1536:26QFElP6n+gBQMOtEvwDpjQGYQbN/PKwNCWwa:26a+2OtEvwDpjtzV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-19_89dcd86a8274b6dbb2bac80bcb57f0f2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3336	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 4940 wrote to memory of 3336	4940	2024-04-19_89dcd86a8274b6dbb2bac80bcb57f0f2_cryptolocker.exe	87
PID 4940 wrote to memory of 3336	4940	2024-04-19_89dcd86a8274b6dbb2bac80bcb57f0f2_cryptolocker.exe	87
PID 4940 wrote to memory of 3336	4940	2024-04-19_89dcd86a8274b6dbb2bac80bcb57f0f2_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-19_89dcd86a8274b6dbb2bac80bcb57f0f2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_89dcd86a8274b6dbb2bac80bcb57f0f2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4940
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3336

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
100KB

MD5
48ff1584f6b9af3576ba23832de58932

SHA1
2fae3245deb7ba57422486b812aea0bab6d9e9f7

SHA256
3f439af8479869b58fe8c9ac10976022c2c588c3fca65d9cda81eca3818e09f3

SHA512
4e4199bc06844717b05f200b3e640ba30d453e43b76682c4837e78da4e6bf571aa8ef683472b7ca4cc45324ca9e9daa2b470818d7c3f6da80a7af361eb5f8dfc

Download Submit
memory/3336-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3336-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4940-0-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4940-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/4940-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download