2f158007eb6a9159d65531d1fb776d2f04c9634663dfe80e5124179a5c593294

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 01:47

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General

Target

2024-03-08_ac5d665caa7bb2ef5cdffcc4bbb12133_cryptolocker.exe
Size

40KB
MD5

ac5d665caa7bb2ef5cdffcc4bbb12133
SHA1

ca4ee505297ba94276cce302ddd6c43f4cb96b4d
SHA256

2f158007eb6a9159d65531d1fb776d2f04c9634663dfe80e5124179a5c593294
SHA512

415b4b84884df70ba1c1ee080878a36c6688f5ef56ae528fcc97fae905bfb26987c8a5b39473586a9827c25558b1cc9caef7e44ab5a63f2537a210ddb906b73c
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOQ:V6QFElP6n+gMQMOtEvwDpjyaYaFAl

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-08_ac5d665caa7bb2ef5cdffcc4bbb12133_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
948	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 920 wrote to memory of 948	920	2024-03-08_ac5d665caa7bb2ef5cdffcc4bbb12133_cryptolocker.exe	90
PID 920 wrote to memory of 948	920	2024-03-08_ac5d665caa7bb2ef5cdffcc4bbb12133_cryptolocker.exe	90
PID 920 wrote to memory of 948	920	2024-03-08_ac5d665caa7bb2ef5cdffcc4bbb12133_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-08_ac5d665caa7bb2ef5cdffcc4bbb12133_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_ac5d665caa7bb2ef5cdffcc4bbb12133_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:920
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:948

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
40KB

MD5
4050f5f3daffe0206336e4c755b5cf06

SHA1
5d170c0727657427dc0a626d36812c79dfbfbc21

SHA256
a7550432642ce57986cbd77a0c7cf38b18864cc757de5e45f7fce3df109a4e00

SHA512
32c1de7db9315c7e0ed8ddff2f50c8b858876f742d7f74146d780f6600bd224ef4d412529287415b75368b03cd3cebd1ba88be46b50e59780abe60681158d7d9

Download Submit
memory/920-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/920-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/920-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/948-18-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/948-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download