aa331e642ea0ebd8144572547b0dadd72c707ac31624aaa098e44f89b8d4d772

Analysis

max time kernel
149s
max time network
156s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19-02-2024 21:55

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General

Target

2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe
Size

45KB
MD5

d008cb30e645973564db5ee966403abc
SHA1

428580443cc5bdaea4cb982e9c07fca4f2c9d767
SHA256

aa331e642ea0ebd8144572547b0dadd72c707ac31624aaa098e44f89b8d4d772
SHA512

43c3e317a0f1c788ecbdafb967ec2b29a28251f6e832af8cf0d30ea86a40368e097be03d6c86dbc9c6cbed07147c97ac12bde87b351b8dbc9208e167fb087b0f
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvcjpa:79mqyNhQMOtEvwDpjBzckf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2224-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012232-11.dat	CryptoLocker_rule2
behavioral1/memory/2224-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1128-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2224-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000012232-11.dat	CryptoLocker_set1
behavioral1/memory/2224-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1128-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1128	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2224	2024-02-19_d008cb30e645973564db5ee966403abc_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 2224 wrote to memory of 1128	2224	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe	28
PID 2224 wrote to memory of 1128	2224	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe	28
PID 2224 wrote to memory of 1128	2224	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe	28
PID 2224 wrote to memory of 1128	2224	2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_d008cb30e645973564db5ee966403abc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1128

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
45KB

MD5
cf883ae03fcc909a34864ecdac03861c

SHA1
196322853910d6a1945baa7dd60a28ea8bc1adb5

SHA256
3c3477134d5766efb577295d8f363e7fcc8750d81be58bf8f738a33a403e0d4b

SHA512
6da2cbae7cbf584e8e9c948ddf41dac86c5a8da4dd7629f9ab6e43819947d545c07e10495cccb65abb9bfe9f60da0bf77c9cf4e6d7f9e021cc203c141820983a

Download Submit
memory/1128-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1128-18-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/1128-20-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2224-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2224-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2224-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2224-4-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2224-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download