26ee8d3b3afd21e5624f9feacc3bd2f860443fb3ee4358db9a2a7ccc6be16120

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 05:55

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General

Target

2024-03-06_595bbb1f3f2167101e07eeb5c4848491_cryptolocker.exe
Size

49KB
MD5

595bbb1f3f2167101e07eeb5c4848491
SHA1

551c768b66b6a6f7d59e51d3a032f95379214257
SHA256

26ee8d3b3afd21e5624f9feacc3bd2f860443fb3ee4358db9a2a7ccc6be16120
SHA512

401b238cd9ba0718eed09a6291978dc1caf13bf2d636daa11a9820c93ca898f1e0619b8cebb8853efc5137434146d89a7fd867fb89247976f136378e4d101189
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZH:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022747-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0004000000022747-12.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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation	2024-03-06_595bbb1f3f2167101e07eeb5c4848491_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2368	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 2532 wrote to memory of 2368	2532	2024-03-06_595bbb1f3f2167101e07eeb5c4848491_cryptolocker.exe	88
PID 2532 wrote to memory of 2368	2532	2024-03-06_595bbb1f3f2167101e07eeb5c4848491_cryptolocker.exe	88
PID 2532 wrote to memory of 2368	2532	2024-03-06_595bbb1f3f2167101e07eeb5c4848491_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-06_595bbb1f3f2167101e07eeb5c4848491_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_595bbb1f3f2167101e07eeb5c4848491_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2532
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2368

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
49KB

MD5
f14994004e704e00ccb498cf3158df6e

SHA1
1ec4955bdeace057bf00837c10c163ffd08418a3

SHA256
15c2a53046dee61c9a886a7d547dbfeda1f24b53171f966c28ff9585883acb69

SHA512
a4197fa48a41cc778db67b1bb34b718adbe85650e0271fa87c460625595ab4ec8975680a9dbf6f8066e967ae6d02f952c4f5f465752c9cfd2fa419c07265bf81

Download Submit
memory/2368-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2368-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/2532-0-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2532-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2532-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download