e62ef926cac2e6c9be72e10bc1be1457cd0c88ce2748eb4f088a55da13456eb5

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 10:17

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General

Target

2024-06-01_82e443633f6d2254081ae086b8d0c082_cryptolocker.exe
Size

46KB
MD5

82e443633f6d2254081ae086b8d0c082
SHA1

dba61ba6ad89667aa85f54d1afb80a120344afd2
SHA256

e62ef926cac2e6c9be72e10bc1be1457cd0c88ce2748eb4f088a55da13456eb5
SHA512

3a756b778fc055822edd120241f523950de76802fc71b66aa294dbf44c3159911966b46e3a2309ab217db8381c820bac53e0edf7d50931875068c7db74ad282d
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPh+1c:P6QFElP6k+MRQMOtEvwDpjBQpVXK+a

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2992-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a000000023400-13.dat	CryptoLocker_rule2
behavioral2/memory/868-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2992-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/868-27-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/2992-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a000000023400-13.dat	CryptoLocker_set1
behavioral2/memory/868-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2992-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/868-27-0x0000000000500000-0x000000000050B000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-06-01_82e443633f6d2254081ae086b8d0c082_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
868	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 2992 wrote to memory of 868	2992	2024-06-01_82e443633f6d2254081ae086b8d0c082_cryptolocker.exe	83
PID 2992 wrote to memory of 868	2992	2024-06-01_82e443633f6d2254081ae086b8d0c082_cryptolocker.exe	83
PID 2992 wrote to memory of 868	2992	2024-06-01_82e443633f6d2254081ae086b8d0c082_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-01_82e443633f6d2254081ae086b8d0c082_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_82e443633f6d2254081ae086b8d0c082_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:868

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
46KB

MD5
934dc3f5d035d76140e345c8a4c73c77

SHA1
b255631f894dab511fbdfb47e0fc1ef68af55639

SHA256
e37e2a2a8e2df4a3fa088421a65b582364c4450d17627418b300c004768fdac8

SHA512
00485f00580ed14094e4faf65abe8b76b2158e1683687aa99617dfe2996ebc41c9cd24424cacc18e3f51ac3dd87addb3beeac3d303a963cbab89e53a13346242

Download Submit
memory/868-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/868-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/868-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/868-27-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2992-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2992-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2992-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2992-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2992-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download