faeac3b1852d3a62326e0d5f69f04f5247dad5bdca6aae00621cea9777e1ece5

Analysis

max time kernel
133s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
01-02-2024 09:30

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General

Target

2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe
Size

46KB
MD5

bc845a7cca42f79d4a85fdedb87cbcfd
SHA1

2038bcaabdbf8c235c2532b88962ca5bd87c5256
SHA256

faeac3b1852d3a62326e0d5f69f04f5247dad5bdca6aae00621cea9777e1ece5
SHA512

723fe58fae42bcd3860532e9f58143b4c28ed35cac6c0c5562f239f32fdd2dd4218de5b8342df1548440f71e9ac733a598f727bae504d166c714ea95cb937490
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaV:xj+VGMOtEvwDpjy+TV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4704-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4704-3-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023127-14.dat	CryptoLocker_rule2
behavioral2/memory/4712-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4704-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4704-3-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023127-14.dat	CryptoLocker_set1
behavioral2/memory/4712-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4704-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4704-3-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023127-14.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4712-54-0x0000000000500000-0x0000000000510000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4712	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 4704 wrote to memory of 4712	4704	2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe	85
PID 4704 wrote to memory of 4712	4704	2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe	85
PID 4704 wrote to memory of 4712	4704	2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_bc845a7cca42f79d4a85fdedb87cbcfd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4704
- 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:4712

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
46KB

MD5
ddb8dbe08f10df6e38a0f05b1b97c5c0

SHA1
9a5ce6d65a700af8b70d311fb6b11a80c73efdeb

SHA256
d418fe98eaedd053c3e012a4b24aba4d7dd8e8a032370333e3d1b98d74253eac

SHA512
124e3517e0bf57bc085b34377652b5b2590e073b1529592e066c80f9c733ab946a396b47c6dfeb61ea918c5667b51bb3a253bf3579eec77fcb97dfc888b5c4f3

Download Submit
memory/4704-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4704-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4704-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4704-3-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4704-4-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4712-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4712-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4712-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download