d88fcafb425f408d63b6e034fd77e9c2e64ac94ecabacbb38f0f9c6600309030

Analysis

max time kernel
143s
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
12-02-2024 17:45

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General

Target

2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe
Size

81KB
MD5

a49c5f9d5ce2788e5bda2d3a230b986f
SHA1

f0c0758299d624ce748d41cb3ca41683ad7de501
SHA256

d88fcafb425f408d63b6e034fd77e9c2e64ac94ecabacbb38f0f9c6600309030
SHA512

8786f32494f09b29020f73298970b7e1d4b92bfd430fce2ebb3a41787f6a308b7cbd98251e8d891ba73e4f68b2b993efac685f8cefc105af508e29f35d38f58f
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAeW:TCjsIOtEvwDpj5HE/OUHnSMc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4168-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_rule2
behavioral2/memory/4168-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2380-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2380-55-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4168-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1
behavioral2/memory/4168-18-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2380-17-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2380-55-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exemisid.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

2380 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2380	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe

description	pid	process	target process
PID 4168 wrote to memory of 2380	4168	2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe	misid.exe
PID 4168 wrote to memory of 2380	4168	2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe	misid.exe
PID 4168 wrote to memory of 2380	4168	2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_a49c5f9d5ce2788e5bda2d3a230b986f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4168

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:2380

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
7a60e85a44e67c474a91ac0bd3b118bc

SHA1
c59718188271cbacf37e7468212b19f6748fc9dc

SHA256
1a653ae55247e38c354af2beb092b74da44cda92cf07fa85414b25b5424a4059

SHA512
fd57764ad1a94a3bb6ced75699fd96e74b31d2f0a077382cd177f6de0a0e897d0fe4234f986aeb4a4c97074bf0afa11a5b8a7628ce13c1e8ee74844251ec4224

Download Submit
memory/2380-17-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2380-22-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2380-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2380-55-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4168-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/4168-1-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4168-2-0x0000000000670000-0x0000000000676000-memory.dmp

Filesize
24KB

Download
memory/4168-3-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/4168-18-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download