50769b00ee54ec3bb96da0cddfe74a1feaef518816061a0fe55c7e20191aa351

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 00:57

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General

Target

2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe
Size

64KB
MD5

e9a9895cfa5163c9bf3809e0167995d0
SHA1

3446d1502a26c99c9affef6c6ccbdf0149b19a4d
SHA256

50769b00ee54ec3bb96da0cddfe74a1feaef518816061a0fe55c7e20191aa351
SHA512

6f7cc32ca5b42804c1a82162eee5f66072a23eb2e2af1683fff1398105a0158c88691614c3f681a80d4eb77767c557188c0ea3f6fc703b90fe5af60aee8493af
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsiv:BbdDmjr+OtEvwDpjM8q

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2364-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2364-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1092-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1092-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2364-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1092-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1092-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2364-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2364-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1092-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1092-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1092 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe

pid process

2364 2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1092	asih.exe

pid	process
2364	2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe

description	pid	process	target process
PID 2364 wrote to memory of 1092	2364	2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe	asih.exe
PID 2364 wrote to memory of 1092	2364	2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe	asih.exe
PID 2364 wrote to memory of 1092	2364	2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe	asih.exe
PID 2364 wrote to memory of 1092	2364	2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_e9a9895cfa5163c9bf3809e0167995d0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2364

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1092

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
64KB

MD5
0f42d185936258c4dbb34aa0e51fb627

SHA1
0a979eaaf4eb9c047598f03a0ca1ce567c87b3b3

SHA256
836afa9a9aa1ea8a59b4db2ac92236a96aa713185c5696aa46b3a66af95db337

SHA512
a870e7f713280cd24325197a6dca6b25b7ea8490debbb4725385b3045992820558b1c6080dfcaa77e65d5714db476287660693a5393df7c22ea7c4b0dbc5b220

Download Submit
memory/1092-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1092-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1092-19-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/1092-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2364-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2364-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2364-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2364-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2364-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download