73ccac633d692afe6a7924f2f6df065dbfb0b74beda218b4cc8810bbc620fa0a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 21:28

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General

Target

2024-03-08_43f3fa31547c2b787ba6c3634bbcecaa_cryptolocker.exe
Size

96KB
MD5

43f3fa31547c2b787ba6c3634bbcecaa
SHA1

f29b79763bf5f1831c4e22a579edc7f736ede7c5
SHA256

73ccac633d692afe6a7924f2f6df065dbfb0b74beda218b4cc8810bbc620fa0a
SHA512

e862f1eac609b86d700f9ffd0f08db209609acd620db4f47b211843e8a63fa2c392f4455036c07388f5550530ffa9fff5da8faad9a811f7408c8c4341bcc27d5
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpwwJ:V6a+pOtEvwDpjtzI

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000231e9-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a0000000231e9-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-08_43f3fa31547c2b787ba6c3634bbcecaa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4316	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 2428 wrote to memory of 4316	2428	2024-03-08_43f3fa31547c2b787ba6c3634bbcecaa_cryptolocker.exe	87
PID 2428 wrote to memory of 4316	2428	2024-03-08_43f3fa31547c2b787ba6c3634bbcecaa_cryptolocker.exe	87
PID 2428 wrote to memory of 4316	2428	2024-03-08_43f3fa31547c2b787ba6c3634bbcecaa_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-08_43f3fa31547c2b787ba6c3634bbcecaa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_43f3fa31547c2b787ba6c3634bbcecaa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2428
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4316

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
96KB

MD5
04f35f71189f764f55427600bb165211

SHA1
6fbd9924055f946261c91a629650b23cce4c4c58

SHA256
b6a86c18b1c5b22477b0a21ab65042340bd74c81a02087c7ef83719c7bfe1d4a

SHA512
2557e5c4efbf7649e4c24f40a196acf204d4f7e078d7d32f55f802cba7f852689d05ca8105fae4236c15d492ae758f35330941e3b59ecd68f70b656a58290f92

Download Submit
memory/2428-0-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2428-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2428-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4316-18-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4316-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download