00f5f0857a752e282d27abafcf7cf061fc6a8add36a242a27e70cd83be0f2f23

Analysis

max time kernel
158s
max time network
183s
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, 22:29

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General

Target

2024-03-26_4892902e1b9f5a32bfbaac2ee17354ab_cryptolocker.exe
Size

131KB
MD5

4892902e1b9f5a32bfbaac2ee17354ab
SHA1

b45aaa21c0d1796170a5f5b1c74d59116ad95fe1
SHA256

00f5f0857a752e282d27abafcf7cf061fc6a8add36a242a27e70cd83be0f2f23
SHA512

67c9d4b0846683bab215ef21267d3aa507d1a15c58aaa7bd9dfef58e6dca33704778a5c389187cf6ba3c9d94ce0fbf3c5df8677ea71ceea053074effb908f793
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp699GNtL1eaI:V6a+pOtEvwDpjtzr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023235-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023235-12.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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-26_4892902e1b9f5a32bfbaac2ee17354ab_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2588	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 4256 wrote to memory of 2588	4256	2024-03-26_4892902e1b9f5a32bfbaac2ee17354ab_cryptolocker.exe	91
PID 4256 wrote to memory of 2588	4256	2024-03-26_4892902e1b9f5a32bfbaac2ee17354ab_cryptolocker.exe	91
PID 4256 wrote to memory of 2588	4256	2024-03-26_4892902e1b9f5a32bfbaac2ee17354ab_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-26_4892902e1b9f5a32bfbaac2ee17354ab_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_4892902e1b9f5a32bfbaac2ee17354ab_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4256
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2588

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
131KB

MD5
df2fa9a69f1839bcb38a3bb2cdb0571f

SHA1
92a5c5d86ed472b8e01a3b6fd0f92bea7dd7064f

SHA256
872feb048c44e35d5cf6748c74ed338fbc8007bcc8d24684ee30ffa1b1ab5c9e

SHA512
32e6e2f22f32a3cb3681764f0c44207f71f007ffda3032ec24aeb503ca34a2bc4afd4937b6f55ef29fb4979efaff54e62627a616fd598b3d61f06a02e255c894

Download Submit
memory/2588-18-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2588-17-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4256-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4256-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4256-2-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download