60544f9fcda6acd68a5d22f34617fb3c5a36caac3ef7eb3843256397db37c988

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
22-05-2024 02:46

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General

Target

2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe
Size

52KB
MD5

b6865062b539ce49a0b6241ba6a621fd
SHA1

e2bd424207d2dee5d2f9178bde6840bc569ec902
SHA256

60544f9fcda6acd68a5d22f34617fb3c5a36caac3ef7eb3843256397db37c988
SHA512

0dee0b76f3775a02b1594e6b9be1ec391d844cdc25eb76ef78eb246682d34a14a2ed1aad9b055d8234d7131faf1d94a1a62da8cb84043d198d192f4fc39d8cf7
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOmF:z6QFElP6n+gKmddpMOtEvwDpj31imF

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/992-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2976-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/992-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2976-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/992-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2976-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2976 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe

pid process

992 2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe

pid	process
2976	asih.exe

pid	process
992	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/992-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2976-25-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe

description	pid	process	target process
PID 992 wrote to memory of 2976	992	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe	asih.exe
PID 992 wrote to memory of 2976	992	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe	asih.exe
PID 992 wrote to memory of 2976	992	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe	asih.exe
PID 992 wrote to memory of 2976	992	2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_b6865062b539ce49a0b6241ba6a621fd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:992

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2976

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
52KB

MD5
225f6561d2614300314a83a1eda7ff6e

SHA1
da11111fb9aa54c0d0287ed169e0c7e7185e8642

SHA256
60799953426ed446d12e8bc4046f04524c2b8bcfdabc9ee421c56b19128aeff5

SHA512
367b002c452b6d4151ddfa45550cd03d9257722a29235cd4bec478dd92314b62e930733597c892ba77be3eeb93da8f8b2ab1f6603a5fa63c21bc030d1e37f713

Download Submit
memory/992-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/992-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/992-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/992-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/992-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2976-17-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2976-24-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2976-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download