df44309d16ae8834b856dbc950bbadfd04ddc671e5df1cf9c03f1e2f86339400

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/03/2024, 17:26

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General

Target

2024-03-26_36373d568bd8470592e1e8e916f582f9_cryptolocker.exe
Size

80KB
MD5

36373d568bd8470592e1e8e916f582f9
SHA1

0591702b2648a6d40b30433802f83ce099adc36f
SHA256

df44309d16ae8834b856dbc950bbadfd04ddc671e5df1cf9c03f1e2f86339400
SHA512

c34fa3f20c3d87d7ff24400492d054bedaeac72570e0fe25bbcaa9bb40c7bce45dc68b348d08cd8949a4c69f1fba3c936e272f9a54a092f00ae02d8521780cb9
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMrX:TCjsIOtEvwDpj5HE/OUHnSM9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/5024-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000231fb-13.dat	CryptoLocker_rule2
behavioral2/memory/2172-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5024-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2172-27-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/5024-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a0000000231fb-13.dat	CryptoLocker_set1
behavioral2/memory/2172-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5024-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2172-27-0x0000000000500000-0x000000000050E000-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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-26_36373d568bd8470592e1e8e916f582f9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2172	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 5024 wrote to memory of 2172	5024	2024-03-26_36373d568bd8470592e1e8e916f582f9_cryptolocker.exe	84
PID 5024 wrote to memory of 2172	5024	2024-03-26_36373d568bd8470592e1e8e916f582f9_cryptolocker.exe	84
PID 5024 wrote to memory of 2172	5024	2024-03-26_36373d568bd8470592e1e8e916f582f9_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-26_36373d568bd8470592e1e8e916f582f9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_36373d568bd8470592e1e8e916f582f9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5024
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2172

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
f4aabe6a4f69695f3fa5823f9626592e

SHA1
3ec2ce58ada22fbdefd910aa4ce7486a994bbb0e

SHA256
03125e40a843de01c20ad4d39960d9d5c7dd8c9d178cabede2abc5da092e00f2

SHA512
827ab569fc58862117fcdec4fb8f347a53b1426062a89e8e9e0e921ebcbe2715c4a4b67655dd35e9422ed6d3395cb9feca18ade9ea8c4b9d5ede8a649a03d4b4

Download Submit
memory/2172-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2172-20-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/2172-26-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/2172-27-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/5024-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/5024-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5024-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5024-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/5024-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download