24fbb8f5ea060cc6220306d8a53987eaf60f9809bf03f2b95a45b27ea0d2c6cc

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
18/03/2024, 22:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-18_af523b84faed36747a810ac0237402fb_cryptolocker.exe
Size

96KB
MD5

af523b84faed36747a810ac0237402fb
SHA1

d881f494c23580269807b85218a04898e405ad7e
SHA256

24fbb8f5ea060cc6220306d8a53987eaf60f9809bf03f2b95a45b27ea0d2c6cc
SHA512

5f7d9a23ccd4dc47cadd33ac5b2fe05e6c04976de42f20645461a2e1ed2eeb08b257db6b19aa1b71b7814180fb16a386e7bf0bd2c52a13a4fba0e0ca831b1ad0
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpUF:V6a+pOtEvwDpjtz3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-18_af523b84faed36747a810ac0237402fb_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2216	asih.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeManageVolumePrivilege	1956	svchost.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2196 wrote to memory of 2216	2196	2024-03-18_af523b84faed36747a810ac0237402fb_cryptolocker.exe	89
PID 2196 wrote to memory of 2216	2196	2024-03-18_af523b84faed36747a810ac0237402fb_cryptolocker.exe	89
PID 2196 wrote to memory of 2216	2196	2024-03-18_af523b84faed36747a810ac0237402fb_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-18_af523b84faed36747a810ac0237402fb_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-18_af523b84faed36747a810ac0237402fb_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2196
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2216

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:2512

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1956

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
96KB

MD5
28ce5d6a2d43f2fedc03931de0eaacee

SHA1
c516114f9b893582856d98fd68f72b560a838e7c

SHA256
55e4ca6ab3a7f21d354dfb372b99b79afcce5b873c44f38f7ffc22f0f760d07b

SHA512
883cb6bc8ee6890d254747647a5704bcb4360f31c52e5d2d6f5f0265c1cb13a2556049a1efe70b6cc97b233084117942f650ebb65780583e26f6ca2491ae4a3c

Download Submit
memory/1956-60-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-61-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-88-0x0000018255DC0000-0x0000018255DC1000-memory.dmp

Filesize
4KB

Download
memory/1956-76-0x0000018255BC0000-0x0000018255BC1000-memory.dmp

Filesize
4KB

Download
memory/1956-73-0x0000018255C80000-0x0000018255C81000-memory.dmp

Filesize
4KB

Download
memory/1956-24-0x000001824D950000-0x000001824D960000-memory.dmp

Filesize
64KB

Download
memory/1956-70-0x0000018255C90000-0x0000018255C91000-memory.dmp

Filesize
4KB

Download
memory/1956-56-0x0000018255F40000-0x0000018255F41000-memory.dmp

Filesize
4KB

Download
memory/1956-57-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-59-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-68-0x0000018255C80000-0x0000018255C81000-memory.dmp

Filesize
4KB

Download
memory/1956-40-0x000001824DA50000-0x000001824DA60000-memory.dmp

Filesize
64KB

Download
memory/1956-65-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-62-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-63-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-64-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-58-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-66-0x0000018255F70000-0x0000018255F71000-memory.dmp

Filesize
4KB

Download
memory/1956-67-0x0000018255C90000-0x0000018255C91000-memory.dmp

Filesize
4KB

Download
memory/2196-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2196-0-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/2196-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/2216-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2216-17-0x0000000000590000-0x0000000000596000-memory.dmp

Filesize
24KB

Download