d78c6d19e43eec8b3224395acd13372231bb09dd52e54d28a8e9f02cb625e836

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 09:26

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General

Target

2024-06-13_fd8deddbba1138bd5963e065caf047db_cryptolocker.exe
Size

37KB
MD5

fd8deddbba1138bd5963e065caf047db
SHA1

52460f91cfac860116f029fc14aee52bd23bd7a2
SHA256

d78c6d19e43eec8b3224395acd13372231bb09dd52e54d28a8e9f02cb625e836
SHA512

956a84875fcaffc5ebed6553490733bedf0f2562ad6331166f29475fa7bd9b886c948c329f76efe45669960c8eb3ec5e1aa0312e08dd5cbd751d46f025e2cfe4
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLbM:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLg

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/524-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a000000023528-13.dat	CryptoLocker_rule2
behavioral2/memory/524-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2472-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/524-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a000000023528-13.dat	CryptoLocker_set1
behavioral2/memory/524-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2472-17-0x0000000000500000-0x000000000050B000-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-1-5-21-4204450073-1267028356-951339405-1000\Control Panel\International\Geo\Nation	2024-06-13_fd8deddbba1138bd5963e065caf047db_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2472	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 524 wrote to memory of 2472	524	2024-06-13_fd8deddbba1138bd5963e065caf047db_cryptolocker.exe	81
PID 524 wrote to memory of 2472	524	2024-06-13_fd8deddbba1138bd5963e065caf047db_cryptolocker.exe	81
PID 524 wrote to memory of 2472	524	2024-06-13_fd8deddbba1138bd5963e065caf047db_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-13_fd8deddbba1138bd5963e065caf047db_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_fd8deddbba1138bd5963e065caf047db_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:524
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2472

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
37KB

MD5
a985f7949d6896ef6430aae0a322bbec

SHA1
4408c122d9a59a57daee806dc9339003628234f1

SHA256
a90ac6e390824648b3903bcf297063aea89450c970c1c8d0306b8b4a89cb4e0a

SHA512
0ef88096d4014e89466a901b6db9b859f483c834abd8ffe11a9fc4b6af2563dbdf1b742da4a5a079f40a7b551ee38fe85de75f826ea86c6a91f2efc281db4889

Download Submit
memory/524-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/524-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/524-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/524-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/524-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2472-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2472-20-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/2472-21-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download