e371fda31b7745679290ad68768f2cc5c74b9aa934d3aae26e62dc890e8398d6

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
26-04-2024 03:34

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General

Target

2024-04-26_3770d7abe719f3c821d18e0c150733fe_cryptolocker.exe
Size

91KB
MD5

3770d7abe719f3c821d18e0c150733fe
SHA1

9de52913c2b22c7cc7b7e0822216c1305c0df9be
SHA256

e371fda31b7745679290ad68768f2cc5c74b9aa934d3aae26e62dc890e8398d6
SHA512

0829445d7d20dd61c74b5c4efc8ec486dfaed1c178208140f3c18a1ec5d052367e8eae7cfd06b946163cc84abb9345a8cddb2ab2182645db2664472d3f0ca8f5
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwMgL0e:V6a+pOtEvwDpjtzh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-12.dat	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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-26_3770d7abe719f3c821d18e0c150733fe_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2704	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 1896 wrote to memory of 2704	1896	2024-04-26_3770d7abe719f3c821d18e0c150733fe_cryptolocker.exe	86
PID 1896 wrote to memory of 2704	1896	2024-04-26_3770d7abe719f3c821d18e0c150733fe_cryptolocker.exe	86
PID 1896 wrote to memory of 2704	1896	2024-04-26_3770d7abe719f3c821d18e0c150733fe_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-26_3770d7abe719f3c821d18e0c150733fe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_3770d7abe719f3c821d18e0c150733fe_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1896
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2704

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
92KB

MD5
42eb9f8449f7152f4a4fee11ef5eb933

SHA1
508db6170d47cf0780cf1c4c55b68655cd3d2811

SHA256
0c33f7374f95811da9a88c78a925166fca44a13ca4e0ff047e250779356990a9

SHA512
e7a5ea09f3829e9c089fd6dfcc9e0853d6711af85b07f173c5abe885cc68c2747a19f6a9fb2cf9c0294ee0c84151c3aa86a86873d74743551a9ea6920ebc1887

Download Submit
memory/1896-0-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/1896-1-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/1896-2-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/2704-19-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download