d87702c33a27bf106d14df9f1b80ac7d6d2164c36cd97afa42413cb681bc4813

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
16-04-2024 05:28

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General

Target

2024-04-16_f4b91e8754dbd79393aea8e9a2b3018e_cryptolocker.exe
Size

130KB
MD5

f4b91e8754dbd79393aea8e9a2b3018e
SHA1

2412eadbb187f2a2c94df7fc48a10a35e118f7e5
SHA256

d87702c33a27bf106d14df9f1b80ac7d6d2164c36cd97afa42413cb681bc4813
SHA512

30fa64e4ab7b506c4c34e06624bd3818d16c2ea8154c285525bf8bed3644981ab82273213ef04e033bb0d69f62e1457e369685bfe17f30422b9aedd40fc91651
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgpwb2C95A:u6a++OtEvwDpj6zw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023270-12.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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-16_f4b91e8754dbd79393aea8e9a2b3018e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4152	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 2300 wrote to memory of 4152	2300	2024-04-16_f4b91e8754dbd79393aea8e9a2b3018e_cryptolocker.exe	86
PID 2300 wrote to memory of 4152	2300	2024-04-16_f4b91e8754dbd79393aea8e9a2b3018e_cryptolocker.exe	86
PID 2300 wrote to memory of 4152	2300	2024-04-16_f4b91e8754dbd79393aea8e9a2b3018e_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-16_f4b91e8754dbd79393aea8e9a2b3018e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_f4b91e8754dbd79393aea8e9a2b3018e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4152

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
130KB

MD5
d268e6c72e9933a7d391ff159e2e4731

SHA1
007a17fbde5b5bdf6b6e502e679bd37afe2b0d3f

SHA256
74cfa2cf3d299f7cbba151655fc57e75156b0a93504a7737cddb70f1ff01f67a

SHA512
db43c87fd25b8ebf2a544f76a30a286aeb8a8b3781252080627a1059270f64f17d8ca641942c2b730c81fea293c4da29abe5c3938c392864bf3f5a55f489cd8b

Download Submit
memory/2300-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2300-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2300-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4152-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4152-19-0x0000000000640000-0x0000000000646000-memory.dmp

Filesize
24KB

Download