d60d9a92ec024f064d484609d73fc81a2b39186aaa24646130b0e4699d34f3c7

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
15/04/2024, 06:07

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General

Target

2024-04-15_828063922397eb27d0a3f97712a77958_cryptolocker.exe
Size

69KB
MD5

828063922397eb27d0a3f97712a77958
SHA1

e4bce1c949578094979514be8478ddea7c2223fb
SHA256

d60d9a92ec024f064d484609d73fc81a2b39186aaa24646130b0e4699d34f3c7
SHA512

64918f1791f3fa80fbb7054e107df073ea5446d4660e2d873483567e4018d5c57f8e33b8f7ccd8de44d115c66bc9e04fc1167c9a0669384a3a9daac8b43e4ad6
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU50U:DW60sllyWOtEvwDpjwF85n

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/2184-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_rule2
behavioral2/memory/1136-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/2184-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_set1
behavioral2/memory/1136-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-15_828063922397eb27d0a3f97712a77958_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1136	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 2184 wrote to memory of 1136	2184	2024-04-15_828063922397eb27d0a3f97712a77958_cryptolocker.exe	87
PID 2184 wrote to memory of 1136	2184	2024-04-15_828063922397eb27d0a3f97712a77958_cryptolocker.exe	87
PID 2184 wrote to memory of 1136	2184	2024-04-15_828063922397eb27d0a3f97712a77958_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-15_828063922397eb27d0a3f97712a77958_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_828063922397eb27d0a3f97712a77958_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1136

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
69KB

MD5
66b7eebe1e84ed381834aa468f79a6b4

SHA1
658c8e2e67f6562c9558c8495a37a50d915c1434

SHA256
e4c635f787df517eead57abe066f92af9c624de26ab78277faf452f6dd8cdbb4

SHA512
cb48c222a64872a3dfaf470507c5b30a7cda495cac01c0771bec362406b11375dd54592aa90b2b2d41b571fe96947a51deaa4fde50fb5014ad1926df6358299a

Download Submit
memory/1136-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1136-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/1136-25-0x0000000001F50000-0x0000000001F56000-memory.dmp

Filesize
24KB

Download
memory/2184-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2184-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2184-7-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download