2f28229008fd3457b521bd0f2b6e772a251ee1bb2915572de6cf949497303cad

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23-02-2024 23:22

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General

Target

2024-02-23_0025e0c333ddcd98858286f8d5a82ae1_cryptolocker.exe
Size

36KB
MD5

0025e0c333ddcd98858286f8d5a82ae1
SHA1

2d15dc26f67db5ea47523333de7657fe2ba21533
SHA256

2f28229008fd3457b521bd0f2b6e772a251ee1bb2915572de6cf949497303cad
SHA512

5a4650316ff20a569d8a52e1fa72559765c10b3cdf28f5ce2a8ee0b53b9011f202c522bd3e4fc22787f01b4a2d37492f6a5120f20a64c0b752a1f272115c22e3
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVajSKm5uhy7O4qqk:X6QFElP6n+gJQMOtEvwDpjBcSKm5uhwE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-23_0025e0c333ddcd98858286f8d5a82ae1_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4040	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 1660 wrote to memory of 4040	1660	2024-02-23_0025e0c333ddcd98858286f8d5a82ae1_cryptolocker.exe	86
PID 1660 wrote to memory of 4040	1660	2024-02-23_0025e0c333ddcd98858286f8d5a82ae1_cryptolocker.exe	86
PID 1660 wrote to memory of 4040	1660	2024-02-23_0025e0c333ddcd98858286f8d5a82ae1_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-23_0025e0c333ddcd98858286f8d5a82ae1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_0025e0c333ddcd98858286f8d5a82ae1_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1660
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4040

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
37KB

MD5
1e648030c323d38a9c1fd4dcd76ef7e6

SHA1
a10e59ccf859d3167704796de8fc067e595b8778

SHA256
e4e92a4283ae1c24fa7cc16b6e2b3b38e929651871a5096f240bc152586749b6

SHA512
8341a5220b18653981bad8e6e0ae161a634ea4cabf52a989bb691d1b457c21c9d4dbd658e92cba9892b53b46ed9c566df39022a3737710cefb1790be1521c47a

Download Submit
memory/1660-0-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1660-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1660-2-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4040-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4040-23-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download