5e6b3a5ecb998e582914f58c9ff5feaac50e473cb4e78e6dd6f4ee57f40ae975

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
11/02/2024, 17:25

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General

Target

2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe
Size

69KB
MD5

1d81e0ac20e19369e86f34b76b117ace
SHA1

c0e0eb3b6f88b47c4776f23f90e8ebca87133797
SHA256

5e6b3a5ecb998e582914f58c9ff5feaac50e473cb4e78e6dd6f4ee57f40ae975
SHA512

f202fc4793662f065371f82c5a2e0cd0c0e99bea5efd5c6b81558e5e168a1357880f977c4a047cc73f0f0f7a92c794d94b334a14d1a7b6a4acaa711d70a9531c
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUy:DW60sllyWOtEvwDpjwF854

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2916-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00070000000122c9-11.dat	CryptoLocker_rule2
behavioral1/memory/2916-12-0x0000000002A80000-0x0000000002A8B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2916-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2808-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2916-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00070000000122c9-11.dat	CryptoLocker_set1
behavioral1/memory/2916-12-0x0000000002A80000-0x0000000002A8B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2916-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2808-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2808	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2916	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_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 2916 wrote to memory of 2808	2916	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe	28
PID 2916 wrote to memory of 2808	2916	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe	28
PID 2916 wrote to memory of 2808	2916	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe	28
PID 2916 wrote to memory of 2808	2916	2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-11_1d81e0ac20e19369e86f34b76b117ace_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2808

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
70KB

MD5
a2b783f264ad71e8e5d08ab428db2b11

SHA1
45aaec8261c6cdb42a67664d5c8c8328d9587b41

SHA256
e2c8b6c8dcd4e6bf6907276363e21cdef14b691a4819bf995d48a8100a75ff72

SHA512
2f417b7b431c28c98408367f8eddeb5ec0e31e31160e4e354fac865a20e60ee58954ba2e4a357f04de98d12b89e2f6f8df1970a87e2f3eb0f19957aba9c7e0b6

Download Submit
memory/2808-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2808-19-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2916-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2916-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2916-2-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2916-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2916-12-0x0000000002A80000-0x0000000002A8B000-memory.dmp

Filesize
44KB

Download
memory/2916-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download