6d618dc5a676318557d458e0fb4bd160a776eae392983a1c83cb2db2127ebe71

Analysis

max time kernel
121s
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
01-02-2024 20:35

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General

Target

2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe
Size

35KB
MD5

52c751627e9d546142b28e0c03de90d4
SHA1

e842823e3836c954c71f961d7b74ed9decbc57be
SHA256

6d618dc5a676318557d458e0fb4bd160a776eae392983a1c83cb2db2127ebe71
SHA512

861080b336f971ab925f327ef08ee7e71754e04aa075a80c3491f92d6ac8cf5a2b9f3fba6c70563f5c3cc4f97c6b41c221ff3b4dd302ef20226fda1f1d0165c9
SSDEEP

384:+cX+ni9VCr5nQI021q4VQBqURYpetOOtEvwDpjqIGRxzOP51FqQLicn3f3QJq:TS5nQJ24LR7tOOtEvwDpjGqPhqlcnv0q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1288-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231eb-13.dat	CryptoLocker_rule2
behavioral2/memory/4992-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1288-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4992-55-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4992-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1288-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4992-55-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/1288-0-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00070000000231eb-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4992-18-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1288-17-0x0000000000500000-0x000000000050E000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4992-55-0x0000000000500000-0x000000000050E000-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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
4992	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 1288 wrote to memory of 4992	1288	2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe	84
PID 1288 wrote to memory of 4992	1288	2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe	84
PID 1288 wrote to memory of 4992	1288	2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-01_52c751627e9d546142b28e0c03de90d4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1288
- 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:4992

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
35KB

MD5
0e7f6c8d03ca7892640aac11413b510c

SHA1
f5125f356f65e9bd7a753c8b84a05348f34fbdde

SHA256
46d556a8a4d58db7f2d37348ced713e5f038d3cc92f460ece3935e71a36189b6

SHA512
3773f4d3bcd744103671984f7481520629050786e4ab7c54572e487b2737455b9ae49a3ee25f05baac170cfdc2f170bac5b0a6123520c3da2fb20adb50f334e7

Download Submit
memory/1288-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1288-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1288-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/1288-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/1288-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4992-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4992-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4992-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4992-55-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download