74c3ce4746fd10a7951dcdd10f8a8922566653bc936dffaedc53b84b9ec15d97

Analysis

max time kernel
146s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2024 22:56

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General

Target

2024-01-18_7632cef317d33f9cc20c82279ca43acb_cryptolocker.exe
Size

67KB
MD5

7632cef317d33f9cc20c82279ca43acb
SHA1

96da537093904ad54f1807ae8fac62951f8bdd34
SHA256

74c3ce4746fd10a7951dcdd10f8a8922566653bc936dffaedc53b84b9ec15d97
SHA512

7aa29122b120f144f1c9cf97e1bce919db0089233e50851881604f11ad4466af9b9257f010438ccf1af91ee6bc601dd0c9152e5619767c24310151e686da385d
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU4:DW60sllyWOtEvwDpjwF85S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3652-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023204-13.dat	CryptoLocker_rule2
behavioral2/memory/4824-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3652-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3652-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023204-13.dat	CryptoLocker_set1
behavioral2/memory/4824-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3652-18-0x0000000000500000-0x000000000050B000-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-18_7632cef317d33f9cc20c82279ca43acb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4824	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 3652 wrote to memory of 4824	3652	2024-01-18_7632cef317d33f9cc20c82279ca43acb_cryptolocker.exe	90
PID 3652 wrote to memory of 4824	3652	2024-01-18_7632cef317d33f9cc20c82279ca43acb_cryptolocker.exe	90
PID 3652 wrote to memory of 4824	3652	2024-01-18_7632cef317d33f9cc20c82279ca43acb_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-01-18_7632cef317d33f9cc20c82279ca43acb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_7632cef317d33f9cc20c82279ca43acb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3652
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4824

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
67KB

MD5
6285e16faf5048fe53aca01671e58e41

SHA1
ed7469d9c2e99a764a7b6afc1488829d8e0e1b68

SHA256
c144ec4105ff2e26824d30e48f4d72e4acc84010f009820d72a9557cf321cab2

SHA512
c6d4acb723972143620518fa35b61d0b245de91157fbacd06f7987d73d0d109a1b8d0f53093f165d3121adb6e8327e7a0b6f1eb31204f60bcedad2effb676bbe

Download Submit
memory/3652-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3652-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3652-2-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3652-3-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/3652-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4824-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4824-20-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download
memory/4824-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download