f5ec120edc16909dba98433df0a070ac0a9c38a84cedb23e7615dc36c433e934

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 02:41

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General

Target

2024-03-08_59fac5394e41cc224c9061c774f961a0_cryptolocker.exe
Size

81KB
MD5

59fac5394e41cc224c9061c774f961a0
SHA1

015cc9f84a91c340c7f3ec04a343d563ee49e619
SHA256

f5ec120edc16909dba98433df0a070ac0a9c38a84cedb23e7615dc36c433e934
SHA512

cb9d5b8a6f39a2cc669717363f9f6ab84411a759e3e84906dd1029f5f1b50b15b8d3d059f27d8f74b986df5ae6c3188f9f4b455798945c539e74890e85e18a2c
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMr1:TCjsIOtEvwDpj5HE/OUHnSMP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1284-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_rule2
behavioral2/memory/1284-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4024-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1284-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000400000001e5eb-13.dat	CryptoLocker_set1
behavioral2/memory/1284-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4024-26-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 1 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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-08_59fac5394e41cc224c9061c774f961a0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4024	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 1284 wrote to memory of 4024	1284	2024-03-08_59fac5394e41cc224c9061c774f961a0_cryptolocker.exe	89
PID 1284 wrote to memory of 4024	1284	2024-03-08_59fac5394e41cc224c9061c774f961a0_cryptolocker.exe	89
PID 1284 wrote to memory of 4024	1284	2024-03-08_59fac5394e41cc224c9061c774f961a0_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-08_59fac5394e41cc224c9061c774f961a0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_59fac5394e41cc224c9061c774f961a0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4024

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
81KB

MD5
d16bba6c5ddf2a62af54f0b12209500b

SHA1
afefc9c0aea1b41c8ca3b1ba3b22c152cc6dc410

SHA256
49cc27215df595358a7f8b88e2f3b057e93e9ea4a0a38478f01aac9f248aeaf8

SHA512
e0d19b54f51472553a3e95d6223d745e031fbb23ebfe1faea88053cc6179f909e8183cda6247b1ca9d63228df07c4f0eac192e02ae69677d222201cd3f7d03bb

Download Submit
memory/1284-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1284-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1284-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1284-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1284-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4024-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/4024-25-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4024-26-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download