dbdcc4cbd95e6aaa23aca97c162c869e800aa687fd41dd062016381def8151aa

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 05:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-07_d662f14c994f642d32d55fab8cbdfb27_cryptolocker.exe
Size

63KB
MD5

d662f14c994f642d32d55fab8cbdfb27
SHA1

9405b3d9fc6d678a9b185b9cdfaeba86a5017c85
SHA256

dbdcc4cbd95e6aaa23aca97c162c869e800aa687fd41dd062016381def8151aa
SHA512

2a4dbdc7b61dee73db6f3e9e5de9f20f24f1a45733e5e187ee8c22b9529ad61c8286d7b7763a0381dc44b5de6cc56871c144a4766774216783836794e7926036
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsg:BbdDmjr+OtEvwDpjM8I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/112-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2
behavioral2/memory/112-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3124-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/112-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3124-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/112-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000400000001e5eb-13.dat	UPX
behavioral2/memory/112-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/3124-26-0x0000000000500000-0x0000000000510000-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-07_d662f14c994f642d32d55fab8cbdfb27_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3124	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 112 wrote to memory of 3124	112	2024-03-07_d662f14c994f642d32d55fab8cbdfb27_cryptolocker.exe	88
PID 112 wrote to memory of 3124	112	2024-03-07_d662f14c994f642d32d55fab8cbdfb27_cryptolocker.exe	88
PID 112 wrote to memory of 3124	112	2024-03-07_d662f14c994f642d32d55fab8cbdfb27_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-07_d662f14c994f642d32d55fab8cbdfb27_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_d662f14c994f642d32d55fab8cbdfb27_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:112
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3124

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

Loading Replay Monitor...

Downloads

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

Filesize
63KB

MD5
d1f26fade38113ecdb568fe58cd2f49b

SHA1
6d474ea8a16428a5462a42636881e618671e4c36

SHA256
27126cd0b267f819602f10bf46989709951786bfb27bca4cedce5114947e2558

SHA512
aeedbe7d90858e293c70184a25f08f6d416fdce283bdc93bc0bf91a89880bd2553f2156024d631cb88b9ba14bc4f66261020c36aa4b5db3c02b72f9ac5747048

Download Submit
memory/112-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/112-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/112-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/112-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/112-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3124-19-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/3124-21-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3124-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download