26c49f1b3d55cee5ef5e9ce3a34f0e8b80229ac9b44ce8c8a3cf8b7254fa46b9

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 03:26

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General

Target

2024-01-28_34daae3d5f531e967567dffffbed3c89_cryptolocker.exe
Size

69KB
MD5

34daae3d5f531e967567dffffbed3c89
SHA1

a3976229638c98a990f18e008c7bf6e5f867ea9d
SHA256

26c49f1b3d55cee5ef5e9ce3a34f0e8b80229ac9b44ce8c8a3cf8b7254fa46b9
SHA512

bb26612e4f6c29ef7a148c75a47b0009f82ccf200291c082189a0338dd3c2da9c89f6caede2359f6ea9389c021a57c20fd9187d21678e03eed5a2ffd898cbea5
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUtbgP:DW60sllyWOtEvwDpjwF85u

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4472-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000e00000002315f-16.dat	CryptoLocker_rule2
behavioral2/memory/4472-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4772-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4472-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000e00000002315f-16.dat	CryptoLocker_set1
behavioral2/memory/4472-19-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4772-17-0x0000000000500000-0x000000000050B000-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	2024-01-28_34daae3d5f531e967567dffffbed3c89_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4772	asih.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 4472 wrote to memory of 4772	4472	2024-01-28_34daae3d5f531e967567dffffbed3c89_cryptolocker.exe	21
PID 4472 wrote to memory of 4772	4472	2024-01-28_34daae3d5f531e967567dffffbed3c89_cryptolocker.exe	21
PID 4472 wrote to memory of 4772	4472	2024-01-28_34daae3d5f531e967567dffffbed3c89_cryptolocker.exe	21

C:\Users\Admin\AppData\Local\Temp\2024-01-28_34daae3d5f531e967567dffffbed3c89_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_34daae3d5f531e967567dffffbed3c89_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4472
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4772

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\asih.exe

Filesize
70KB

MD5
5990146c313856576d3c93af37d581b3

SHA1
2fedb12988f95d8cc8c37f789351a9cb5aafc224

SHA256
c8bde2e1a97e4c3a79dee26c2d762ad927b27e9a56391d5eeda7ffa82c66f9a1

SHA512
283a39e4c042843cf6bea5ccace384d4b308eaf13d9680a408608600cb65c2940657bb871d945b03ab5f6a048f34ab5d3f1c06d283d4db476a2011a29928f553

Download Submit
memory/4472-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4472-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4472-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4472-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4472-19-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4772-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4772-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4772-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download