77d274af2cd6f0305434f13d79c72f600b005dbb67c934ec76c0852bee525764

Analysis

max time kernel
151s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19/03/2024, 19:29

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General

Target

2024-03-19_276cd545c2f30dee4447e35afbc8c3c8_cryptolocker.exe
Size

103KB
MD5

276cd545c2f30dee4447e35afbc8c3c8
SHA1

cbef548f127a9cdffbc699a60943ec50be7a681e
SHA256

77d274af2cd6f0305434f13d79c72f600b005dbb67c934ec76c0852bee525764
SHA512

d7d6da97d7d024842d32e77cd9acac2e33260635f0d04f0a0885ad891e5e7cfcac83a21310a4a7c8bb5f9894ed94cb646d84c45d635cfc8dd9ab40c2f2e81c05
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2mwVe9O:xj+VGMOtEvwDpjubwQEIiVmkxv/y9O

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/408-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002322a-13.dat	CryptoLocker_rule2
behavioral2/memory/408-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4444-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4444-59-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/408-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002322a-13.dat	CryptoLocker_set1
behavioral2/memory/408-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4444-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4444-59-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/408-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000002322a-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/408-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4444-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4444-59-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 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	2024-03-19_276cd545c2f30dee4447e35afbc8c3c8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4444	misid.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 408 wrote to memory of 4444	408	2024-03-19_276cd545c2f30dee4447e35afbc8c3c8_cryptolocker.exe	90
PID 408 wrote to memory of 4444	408	2024-03-19_276cd545c2f30dee4447e35afbc8c3c8_cryptolocker.exe	90
PID 408 wrote to memory of 4444	408	2024-03-19_276cd545c2f30dee4447e35afbc8c3c8_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-19_276cd545c2f30dee4447e35afbc8c3c8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_276cd545c2f30dee4447e35afbc8c3c8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:408
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4444

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\misid.exe

Filesize
103KB

MD5
7abe3df0e1a3b8b6c81e1e6aae4c48d5

SHA1
3235b1dd3ef79f20bf8064e73fb9bd1d10d8a475

SHA256
ec93db0e0bc235e95b45a97d3313dae238f162307119f9157b48f52a2fe3dee5

SHA512
f054eaa06fea611f01115039e14262a745a31f9c2307fa171e15bc875f9c74090569ed453e2fda5bd1775191d65f70e48f1012a71bc0f09785b2e3e0aa509453

Download Submit
memory/408-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/408-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/408-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/408-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/408-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4444-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4444-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4444-22-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4444-59-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download