5e9820d499e3a51a9e5f2996cd1fec26e20dd28e4e2783d64022ee1a93e73c9b

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
27/02/2024, 16:34

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General

Target

2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_cryptolocker.exe
Size

31KB
MD5

a01bcdf145ae61fa34f67f90fb56884b
SHA1

775f8a4a1de7b0d026abed4d4d8ada029a20b89c
SHA256

5e9820d499e3a51a9e5f2996cd1fec26e20dd28e4e2783d64022ee1a93e73c9b
SHA512

7bf62f504b93174fb4f6799f07f87a3360a17c529c38572729e002b132af2d1a99f16a867527bae422de110b8b1804a21e92004eac3e9b7fe48c2e030dfa9e8e
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tH3Mf:q0zizzOSxMOtEvwDpj/arqs

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c00000001223a-11.dat	CryptoLocker_rule2
behavioral1/memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1572-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1572-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1572-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1572-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c00000001223a-11.dat	UPX
behavioral1/memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1572-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1572-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
1572	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2108	2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_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 2108 wrote to memory of 1572	2108	2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_cryptolocker.exe	28
PID 2108 wrote to memory of 1572	2108	2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_cryptolocker.exe	28
PID 2108 wrote to memory of 1572	2108	2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_cryptolocker.exe	28
PID 2108 wrote to memory of 1572	2108	2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-27_a01bcdf145ae61fa34f67f90fb56884b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2108
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1572

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
32KB

MD5
f96bd31843e4f0c35a37b8e5292bc5fb

SHA1
ecf1cd3a16c8da8d50fab50fe03fba020bf40fcb

SHA256
c0f100b6448bdec742e0b0fbdb37811657f6af9ba2768b7ea25897435e626b37

SHA512
1dfb2928dfc1bddeab130cfa0328c6fffabc1e704c1f81caf0aa778d1e0a3569277e6c585c76e579f6f4e78f1ccbc0e801e8836b519d893e3113023e80bea30e

Download Submit
memory/1572-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1572-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1572-20-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1572-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2108-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2108-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2108-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2108-9-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2108-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download