f58935a8c3e9964ce8dd492c03b4913d83b860deeeba39e92ccd3183fc6ec1b5

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
03-05-2024 03:55

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General

Target

2024-05-03_c522543a558331ad5dbbcadf0e65b730_cryptolocker.exe
Size

96KB
MD5

c522543a558331ad5dbbcadf0e65b730
SHA1

ca2ff5c034fd213f08e14d9d314fe6f3e9b86e81
SHA256

f58935a8c3e9964ce8dd492c03b4913d83b860deeeba39e92ccd3183fc6ec1b5
SHA512

a701588188dc679e0055e695e4dfc18e5b3de3462a91e31490ddb40847c79f004378281ff174cc3ee15f71971e9e42db9bbbdb20a3c2c92b2ee8b5117d98c61c
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0B:V6a+pOtEvwDpjtz5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b27-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b27-12.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-1-5-21-2818691465-3043947619-2475182763-1000\Control Panel\International\Geo\Nation	2024-05-03_c522543a558331ad5dbbcadf0e65b730_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3928	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 1128 wrote to memory of 3928	1128	2024-05-03_c522543a558331ad5dbbcadf0e65b730_cryptolocker.exe	83
PID 1128 wrote to memory of 3928	1128	2024-05-03_c522543a558331ad5dbbcadf0e65b730_cryptolocker.exe	83
PID 1128 wrote to memory of 3928	1128	2024-05-03_c522543a558331ad5dbbcadf0e65b730_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-03_c522543a558331ad5dbbcadf0e65b730_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_c522543a558331ad5dbbcadf0e65b730_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3928

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
646b57eece679654307a19c2d13b4f48

SHA1
7364fdde90e1e999d3eb9354050f73e093e488fe

SHA256
ccb28653001b57a06c7bfbb97ba3fedf51831a0e36ec5ad447a5aefa138dfa9c

SHA512
dc956ab2a4ce233848ae2141f1b1abbddd1ef13117a6de254cb31c9ed78b4835a1fa3ed69034757b8e6223ebaa376646a03015e57032f5b7534740645d30b0f4

Download Submit
memory/1128-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1128-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1128-8-0x00007FFD9E270000-0x00007FFD9E465000-memory.dmp

Filesize
2.0MB

Download
memory/3928-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3928-23-0x00007FFD9E270000-0x00007FFD9E465000-memory.dmp

Filesize
2.0MB

Download
memory/3928-24-0x00007FFD9E270000-0x00007FFD9E465000-memory.dmp

Filesize
2.0MB

Download