c66b73bebe7f418cc9d9d855fc5eb391df69e791b46c3ab1e1f1d9a813451756

Analysis

max time kernel
85s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 07:02

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General

Target

2024-01-29_76b2e9e16b0fbaa16d57f36e95b242b6_cryptolocker.exe
Size

39KB
MD5

76b2e9e16b0fbaa16d57f36e95b242b6
SHA1

2fa28ccb59ee9a683e4c33d4c47ddc2dfba3143b
SHA256

c66b73bebe7f418cc9d9d855fc5eb391df69e791b46c3ab1e1f1d9a813451756
SHA512

455e161bb33a56c1d4e5df6af899dab64be61a867bd6325ab081b8cd478c2e393010953c54f06fdd2fd483e4fa516a29bf340dcfc7829d384dbfbc536a441b7d
SSDEEP

384:60VkMq01bJ3wtEwPS8HLEh+Jagz+3be+26aIIcVRYpetOOtEvwDpjqIGRmdHzOO5:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6gi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1036-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320c-13.dat	CryptoLocker_rule2
behavioral2/memory/1036-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3724-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3724-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1036-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320c-13.dat	CryptoLocker_set1
behavioral2/memory/1036-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3724-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3724-55-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1036-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002320c-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1036-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3724-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3724-55-0x0000000000500000-0x000000000050F000-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-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	misid.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	2024-01-29_76b2e9e16b0fbaa16d57f36e95b242b6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3724	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 1036 wrote to memory of 3724	1036	2024-01-29_76b2e9e16b0fbaa16d57f36e95b242b6_cryptolocker.exe	83
PID 1036 wrote to memory of 3724	1036	2024-01-29_76b2e9e16b0fbaa16d57f36e95b242b6_cryptolocker.exe	83
PID 1036 wrote to memory of 3724	1036	2024-01-29_76b2e9e16b0fbaa16d57f36e95b242b6_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-01-29_76b2e9e16b0fbaa16d57f36e95b242b6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_76b2e9e16b0fbaa16d57f36e95b242b6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1036
- 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:3724

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
39KB

MD5
36cdf03ac29fde03d3ba9c1eff203f7b

SHA1
b68d8d98415386088c88024ff1f9e7959c826bbd

SHA256
3bfe3260c3aba252e9422340dc9c0a468f3cca7f4c839b53bed2c1fb0633b674

SHA512
23208769c263335ecfb241f6b29d971346f0dc754b8cc8365b416b2cc14ea75ed1f2fd20014b283ed4d4bc4a15b5205c7253ecff13f19397322d84ee741d517f

Download Submit
memory/1036-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1036-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1036-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1036-3-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1036-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3724-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3724-20-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3724-24-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3724-55-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download