e21370a46f67e9dbb3b7aeeba18bf2974d71c46f85e16e62de2fd96e97f76081

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
23/02/2024, 16:54

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General

Target

2024-02-23_f0112997142bfd56da238ab75dfd89c8_cryptolocker.exe
Size

98KB
MD5

f0112997142bfd56da238ab75dfd89c8
SHA1

2d6aeb9f0a10a783fdfc08d040a7b947b4c5ce76
SHA256

e21370a46f67e9dbb3b7aeeba18bf2974d71c46f85e16e62de2fd96e97f76081
SHA512

79b76a323f06f51872839e44befd36dc9b02f9abed258f7ad23b0ae38cce1df6089d8558a02861029d13ef8f607001ab870ceac02bd3b1cd76762ab28db1cd67
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbX:V6a+pOtEvwDpjtzH

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000b00000001e597-12.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-1-5-21-1712835645-2080934712-2142796781-1000\Control Panel\International\Geo\Nation	2024-02-23_f0112997142bfd56da238ab75dfd89c8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3356	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 1604 wrote to memory of 3356	1604	2024-02-23_f0112997142bfd56da238ab75dfd89c8_cryptolocker.exe	87
PID 1604 wrote to memory of 3356	1604	2024-02-23_f0112997142bfd56da238ab75dfd89c8_cryptolocker.exe	87
PID 1604 wrote to memory of 3356	1604	2024-02-23_f0112997142bfd56da238ab75dfd89c8_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-23_f0112997142bfd56da238ab75dfd89c8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_f0112997142bfd56da238ab75dfd89c8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3356

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
98KB

MD5
4fb95763b982f02efb7541b17987501e

SHA1
cf787144dbb148518fd263dcb20008ec583c7807

SHA256
595a668e8380e076a9e0c29dae3cb73b4014210efabb060c423983314e8db5c0

SHA512
61454eb89642b92d5662d2ae586c9d48ca5bffadc316dce7916af5a667fd5758cc3e8478d9dd052c287413c5071d217fea418ad055e1c1c88faa9cb55877231c

Download Submit
memory/1604-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1604-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1604-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3356-17-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/3356-19-0x0000000000650000-0x0000000000656000-memory.dmp

Filesize
24KB

Download