3711638b5008d318b962cbc280a27ece46d3a3b12943743438494d1589cb7069

Analysis

max time kernel
149s
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
26/03/2024, 18:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-26_114047f29fdc0909101f8f587933d740_cryptolocker.exe
Size

68KB
MD5

114047f29fdc0909101f8f587933d740
SHA1

0cfcc39f472a4c4ef5a684e1a494d90f954a284d
SHA256

3711638b5008d318b962cbc280a27ece46d3a3b12943743438494d1589cb7069
SHA512

42388172e2e3f3680a69e4d47a0a80f58b8ef5304f8f37ba61124fe1cb0432f1501778f51ea388b602c258d533eb443766e4c701537dfd1a1ed4539d9ad97efa
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU9:DW60sllyWOtEvwDpjwF85T

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/2816-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_rule2
behavioral2/memory/2816-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3544-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/2816-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000001ebc7-13.dat	CryptoLocker_set1
behavioral2/memory/2816-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3544-17-0x0000000000500000-0x000000000050B000-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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-26_114047f29fdc0909101f8f587933d740_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3544	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 2816 wrote to memory of 3544	2816	2024-03-26_114047f29fdc0909101f8f587933d740_cryptolocker.exe	89
PID 2816 wrote to memory of 3544	2816	2024-03-26_114047f29fdc0909101f8f587933d740_cryptolocker.exe	89
PID 2816 wrote to memory of 3544	2816	2024-03-26_114047f29fdc0909101f8f587933d740_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-26_114047f29fdc0909101f8f587933d740_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_114047f29fdc0909101f8f587933d740_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3544

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
68KB

MD5
a7bd00cb09bce68fa7a94855da60e608

SHA1
420a960c007d5fb296140b952d4073a61a6cff6a

SHA256
911a7f5abbde8be4603c341879041cefdca9adcf1f1be43d4b8165abdc514da5

SHA512
e4f46eec7ecd2570194a4dce18fe65178734beeeb7f441ef023e3bbb8e1d32f3b79d9c6988f83b6562d3962d1f9c088ae908293cff730cca4648b0de63229d08

Download Submit
memory/2816-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2816-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2816-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2816-3-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2816-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3544-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3544-20-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/3544-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download