5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23-05-2024 22:06

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General

Target

5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe
Size

59KB
MD5

1820f64d1dc766239cf45aa204b0a35a
SHA1

0ff49812eabc6e965a17e9b1f84dc3e505022ce3
SHA256

5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99
SHA512

bbd56bfc75a5bba536b24969322a951c24f439bdda4f1c652b6bed827bbd42fd5d1dab2e4a8dfdce103f2575c08d2df5ee4539ecafc4e30d293f69ab8d26c69e
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPj9:H6QFElP6n+gou9cvMOtEvwDpjCpVXI

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015ca5-11.dat	CryptoLocker_rule2
behavioral1/memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2288-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b000000015ca5-11.dat	CryptoLocker_set1
behavioral1/memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2288-24-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000b000000015ca5-11.dat	UPX
behavioral1/memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2288-24-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2288	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2200	5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000b000000015ca5-11.dat	upx
behavioral1/memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2288-24-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 2200 wrote to memory of 2288	2200	5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe	28
PID 2200 wrote to memory of 2288	2200	5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe	28
PID 2200 wrote to memory of 2288	2200	5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe	28
PID 2200 wrote to memory of 2288	2200	5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe	28

C:\Users\Admin\AppData\Local\Temp\5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe
"C:\Users\Admin\AppData\Local\Temp\5b5d6524f5eda0e2c7e73a16826278cab0c49faccafe3ee00a8ac23943e63d99.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2200
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2288

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
59KB

MD5
ffba5ca8d9c8cd80757790ffeb6269b1

SHA1
91aa98cf95495e2feaa9e1017640801b01e121f8

SHA256
569c510fbcfa1d911b4ade74b864848d72685810d1372331bb157db61272a5e6

SHA512
c733afea9fb6a9b35650e6ccefa22d6fada0ed558e99e078541c92d427adcc9caba8ee2a34a208503107b001bc819339a4b55591cde449b0e0e7b834d6a62d1d

Download Submit
memory/2200-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2200-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2200-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2200-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2200-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2288-24-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2288-17-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download