3767b0f7649acfdc1d1ab844e02dcec845705d25e12fc872eea2ae979017f210

Analysis

max time kernel
87s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
04-02-2024 01:05

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General

Target

2024-02-04_36bf5a94270504e28e216ea041755ed7_cryptolocker.exe
Size

100KB
MD5

36bf5a94270504e28e216ea041755ed7
SHA1

c752d862fbfe397ae81c935e2df662cf0ffdb20b
SHA256

3767b0f7649acfdc1d1ab844e02dcec845705d25e12fc872eea2ae979017f210
SHA512

8abb88e4c386b884cbfc4cc555f1da3b419cbdfbf4c201121ccb61b257deba2a36b5bf2f746273f325fc7bc3a1a9130f9a0a5839955f66560ff04bc094a4919c
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJHlv/k2NMc:xj+VGMOtEvwDpjubwQEIiVmkxv/D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4468-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000231f0-13.dat	CryptoLocker_rule2
behavioral2/memory/4468-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2144-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4468-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x00080000000231f0-13.dat	CryptoLocker_set1
behavioral2/memory/4468-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2144-54-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4468-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00080000000231f0-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4468-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2144-54-0x0000000000500000-0x0000000000510000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-04_36bf5a94270504e28e216ea041755ed7_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
2144	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 4468 wrote to memory of 2144	4468	2024-02-04_36bf5a94270504e28e216ea041755ed7_cryptolocker.exe	87
PID 4468 wrote to memory of 2144	4468	2024-02-04_36bf5a94270504e28e216ea041755ed7_cryptolocker.exe	87
PID 4468 wrote to memory of 2144	4468	2024-02-04_36bf5a94270504e28e216ea041755ed7_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-04_36bf5a94270504e28e216ea041755ed7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_36bf5a94270504e28e216ea041755ed7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4468
- 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:2144

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
101KB

MD5
82145cf03434ce07d0a1a18789e57bb3

SHA1
659456e39b25b84d3b8bb2862ea731f4364300d1

SHA256
92f6b0118488e6d7f9f40ef176eea5f976a70cd855594ff444a42fdfe64a26a7

SHA512
2cd13536642a6cba167a960c0de16f9cdfcbba7cdec690f613ad0ae5e623dc159876e50d457914ab17631940f2aafe6c7dc542013edbb9632755008da9a1fd18

Download Submit
memory/2144-19-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/2144-22-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/2144-54-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4468-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4468-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4468-2-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/4468-3-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4468-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download