b8b780a1134448aca6ef4b1183ed53a8a0b624814d401b3f92b4a29116ee46fd

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
04/02/2024, 00:27

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General

Target

2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe
Size

56KB
MD5

445ae8b214357bdd9ae7099223a9897d
SHA1

1fd5c831781576e7eceac417586e2f811c2f85ec
SHA256

b8b780a1134448aca6ef4b1183ed53a8a0b624814d401b3f92b4a29116ee46fd
SHA512

98b599324905d101c848a5b064c36d73431a59aefcca74446a969b8fd91f5e9d5af6762c64a608036b6a0808edca869502db2c3c6eead79305e5dbc4accb732e
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61W:BbdDmjr+OtEvwDpjMs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2188-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a0000000133a9-11.dat	CryptoLocker_rule2
behavioral1/memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1528-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2188-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1528-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2188-1-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1528-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1528-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2188-1-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a0000000133a9-11.dat	UPX
behavioral1/memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1528-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2188-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp	UPX
behavioral1/memory/1528-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1528	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2188	2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe

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

description	pid	Process	procid_target
PID 2188 wrote to memory of 1528	2188	2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe	28
PID 2188 wrote to memory of 1528	2188	2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe	28
PID 2188 wrote to memory of 1528	2188	2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe	28
PID 2188 wrote to memory of 1528	2188	2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_445ae8b214357bdd9ae7099223a9897d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1528

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

Replay Monitor

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Downloads

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

Filesize
56KB

MD5
cb828365ca68607f8c65f83d4c577ede

SHA1
b576d7a24237abdfabbcdb6cde85360ed58c6d31

SHA256
4015ef9b84002e7aff9894d6f32b1afd9de2754a4ad11e60900f6caf9e2d126f

SHA512
c924fe6ab32e74494c3e30b251fdcab3086fda970960e882af1d34c535f7296cc1a79877a761e984ea60f928d3de0cd809d3d2e03841de0b564f76f13968a038

Download Submit
memory/1528-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1528-19-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/1528-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2188-1-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2188-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2188-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp

Filesize
64KB

Download