e4c4511b2d1140ff0509c9c8a38eeac0e9eb83628bf4f8b2628bdb077fefbf8c

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
27-03-2024 05:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-27_d29967d3267e24f74902d0d114ad9cfe_cryptolocker.exe
Size

63KB
MD5

d29967d3267e24f74902d0d114ad9cfe
SHA1

25f36a0d087e541e6d930e7d93bd36d20fc855bb
SHA256

e4c4511b2d1140ff0509c9c8a38eeac0e9eb83628bf4f8b2628bdb077fefbf8c
SHA512

8676b37889d4ed80bb48fb365cbe3e737bfcd1c40b9a3f3f66d90f6f04fb1eec6b4c55dcf7836ce65c894ad46422df513230d942aafa2fa3e9c9c3628855ac65
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5ScF:zj+soPSMOtEvwDpj4kpmeLmLF

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002321e-13.dat	CryptoLocker_rule2
behavioral2/memory/3196-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1600-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002321e-13.dat	CryptoLocker_set1
behavioral2/memory/3196-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1600-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3196-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002321e-13.dat	UPX
behavioral2/memory/3196-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1600-26-0x0000000000500000-0x0000000000510000-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	2024-03-27_d29967d3267e24f74902d0d114ad9cfe_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1600	misid.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3196-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002321e-13.dat	upx
behavioral2/memory/3196-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1600-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 3196 wrote to memory of 1600	3196	2024-03-27_d29967d3267e24f74902d0d114ad9cfe_cryptolocker.exe	91
PID 3196 wrote to memory of 1600	3196	2024-03-27_d29967d3267e24f74902d0d114ad9cfe_cryptolocker.exe	91
PID 3196 wrote to memory of 1600	3196	2024-03-27_d29967d3267e24f74902d0d114ad9cfe_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-27_d29967d3267e24f74902d0d114ad9cfe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_d29967d3267e24f74902d0d114ad9cfe_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3196
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1600

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\misid.exe

Filesize
63KB

MD5
79398f2dd1606c9e81fe79bc987880ac

SHA1
b0b83764bd971b85f563d01f5e2d4c519d446029

SHA256
33bb6aa8a5acc756d808b69df99ed87f020506de805975e646a2d063a0afa21b

SHA512
8408c073f0ce447555b9c7a0c91dda16ed1a50696420f32753e06e20da760bfbb540da64ee16858bd7f11a19a53469d9622b8f94a60c047d1e65df7869974800

Download Submit
memory/1600-20-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1600-19-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/1600-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3196-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3196-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3196-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3196-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3196-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download