110284234ef0b56732fb5f7cea4ed3ff279252ad11d583bd90db35abeaf5fd8e

Analysis

max time kernel
0s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
23-01-2024 20:33

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General

Target

2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_cryptolocker.exe
Size

58KB
MD5

f7e08600f54a42c40c3f3938198e0a8f
SHA1

bb0a5f18bdfb8eca12fbc12b75509c9cdbd28e93
SHA256

110284234ef0b56732fb5f7cea4ed3ff279252ad11d583bd90db35abeaf5fd8e
SHA512

803838403225c6492444394d93810cf5f28396b54e3e78170831cc216448eeee988374b2161782a3aa9b13d1afd3762da9c86fb4972de4ea06961797f4ab9235
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb614l:BbdDmjr+OtEvwDpjMq

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014a5b-25.dat	CryptoLocker_rule2
behavioral1/memory/1968-21-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2196-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1968-21-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2196-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014a5b-25.dat	UPX
behavioral1/memory/1968-21-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2196-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1968	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2196	2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_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 2196 wrote to memory of 1968	2196	2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_cryptolocker.exe	16
PID 2196 wrote to memory of 1968	2196	2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_cryptolocker.exe	16
PID 2196 wrote to memory of 1968	2196	2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_cryptolocker.exe	16
PID 2196 wrote to memory of 1968	2196	2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_cryptolocker.exe	16

C:\Users\Admin\AppData\Local\Temp\2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-23_f7e08600f54a42c40c3f3938198e0a8f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- 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:1968

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

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

Filesize
59KB

MD5
cc4eda33a8ac3857878b3876aeeaed22

SHA1
568620621d386105ea75e13d3d7ce9d2cf705f25

SHA256
75e40443577a76066ac10cef5a37c307fad1dbad2e23f24fc4cc1fd6092bc88d

SHA512
a7ba02d891c433dedb6be9913d10f9214775fddb10cdcf8496bebca666141dc5c33ef5516aefe13f2c11f3098e9534af165e3d5c4acbf242509ee1dbee3db582

Download Submit
memory/1968-17-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1968-19-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1968-21-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2196-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2196-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2196-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2196-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2196-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download