f79d200222c9a03d40cc496551e8022a782edbac77c77bfb0041b81137559b5b

Analysis

max time kernel
148s
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
07/05/2024, 03:52

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General

Target

2024-05-07_eb8b20d621d9e5658ac72d037046de0f_cryptolocker.exe
Size

46KB
MD5

eb8b20d621d9e5658ac72d037046de0f
SHA1

1173e4490ef1514546eaed105779b18f57032474
SHA256

f79d200222c9a03d40cc496551e8022a782edbac77c77bfb0041b81137559b5b
SHA512

e2a5f0e6634b3ce21392df55a6835d4a8261e97d7cda4e229d8dba22d4011408860d5c0946ffb79c49e46525e342b27d068bbdcfa7db2db1d2fff90d5c5c8ee1
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPo1:P6QFElP6k+MRQMOtEvwDpjBQpVXz1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1772-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023b56-13.dat	CryptoLocker_rule2
behavioral2/memory/3116-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1772-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3116-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1772-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c000000023b56-13.dat	CryptoLocker_set1
behavioral2/memory/3116-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1772-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3116-27-0x0000000000500000-0x000000000050B000-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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-07_eb8b20d621d9e5658ac72d037046de0f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3116	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 1772 wrote to memory of 3116	1772	2024-05-07_eb8b20d621d9e5658ac72d037046de0f_cryptolocker.exe	85
PID 1772 wrote to memory of 3116	1772	2024-05-07_eb8b20d621d9e5658ac72d037046de0f_cryptolocker.exe	85
PID 1772 wrote to memory of 3116	1772	2024-05-07_eb8b20d621d9e5658ac72d037046de0f_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-05-07_eb8b20d621d9e5658ac72d037046de0f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-07_eb8b20d621d9e5658ac72d037046de0f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1772
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3116

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
46KB

MD5
d2ae6fc1815a859e00323bde9b4d33cb

SHA1
d57f662be40d143124df232bfe706f94e51da717

SHA256
44c4d9927c4bdcce6c6070197ee4dde54ca9d09a54d647965e256f85353a4f1d

SHA512
9832fb35cb4f97e0b183f7b020a11dd2cf20cda5607958f6c5f14ca1abbcac24523d0f5e03f9ca2f8a3333e767a43b8643115c4a581ac70127040471e8390969

Download Submit
memory/1772-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1772-1-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/1772-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1772-9-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/1772-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3116-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3116-20-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/3116-26-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3116-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download