f622f4f4836c92a253168aaf7ef01ad1b6796498f49e350e889cb8f98ed60d9a

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16/03/2024, 07:53

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General

Target

2024-03-16_bb56b1f43609cbc2282c2684354ae7aa_cryptolocker.exe
Size

26KB
MD5

bb56b1f43609cbc2282c2684354ae7aa
SHA1

5e292c817fc26eb4625c6aebc8dd62603a7feb1f
SHA256

f622f4f4836c92a253168aaf7ef01ad1b6796498f49e350e889cb8f98ed60d9a
SHA512

8e7c5683f7b199deeee23f76ac29272a884c94fd8ea082cdfbd015bdd04ed04757e29346311bb0cd4636a1b7f856eb3d949c6f40bb5e5c4354376da10d74a8bf
SSDEEP

384:qxOZzyjOnqGAs+8ULueO4NdE8tOOtEvwDpjqIGRYK1sGGYkxOqy:q0ZziOWwULueOSdE8tOOtEvwDpjeYy

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002321f-13.dat	CryptoLocker_rule2
behavioral2/memory/2172-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3056-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2172-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3056-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2172-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000700000002321f-13.dat	UPX
behavioral2/memory/2172-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3056-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2172-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-16_bb56b1f43609cbc2282c2684354ae7aa_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2172	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 3056 wrote to memory of 2172	3056	2024-03-16_bb56b1f43609cbc2282c2684354ae7aa_cryptolocker.exe	92
PID 3056 wrote to memory of 2172	3056	2024-03-16_bb56b1f43609cbc2282c2684354ae7aa_cryptolocker.exe	92
PID 3056 wrote to memory of 2172	3056	2024-03-16_bb56b1f43609cbc2282c2684354ae7aa_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-03-16_bb56b1f43609cbc2282c2684354ae7aa_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_bb56b1f43609cbc2282c2684354ae7aa_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2172

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
27KB

MD5
7c518f4bb7b992c690fe72bfcc3165d1

SHA1
1fdd7ec23bbbd342888309d73f57a10b2ea55d4d

SHA256
12c6e4a73cd9fdf73759eec54cb9fccee0ba700fb5a7b82dfa3dac96f00d6522

SHA512
3b111ab13b676d541fee745a28a6cd240fad0a4e990a419b181d3d339c258bb12b299f469336759cab5667914e8b1975e56aaccb8a69453d84d68979d8c35f2f

Download Submit
memory/2172-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2172-20-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/2172-22-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/2172-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3056-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3056-1-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/3056-2-0x0000000000530000-0x0000000000536000-memory.dmp

Filesize
24KB

Download
memory/3056-3-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/3056-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download