9d1ab01c78d8d2e7b67f52748e50ba3ccab2a072dac158e0c2d78869f4203554

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
10/04/2024, 02:47

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General

Target

2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe
Size

118KB
MD5

811d0ddd5a0805bc779fc963f37e0285
SHA1

17d1e85becd0c8925b9229196ffc24ac6300a559
SHA256

9d1ab01c78d8d2e7b67f52748e50ba3ccab2a072dac158e0c2d78869f4203554
SHA512

794f0c34991461748facf464019e3953fb53542bbd01ce34806fd7be21061db107bda88c65e6b07eba39cf55ccbfb9e5c3751cadd8dba6be412adbd6ecdb996c
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01hC:z6a+CdOOtEvwDpjczO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2872-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2872-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00070000000120e4-11.dat	CryptoLocker_rule2
behavioral1/memory/3012-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3012-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2872-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2872-14-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00070000000120e4-11.dat	CryptoLocker_set1
behavioral1/memory/3012-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3012-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2872-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2872-14-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00070000000120e4-11.dat	UPX
behavioral1/memory/3012-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3012-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3012	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2872	2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2872-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2872-14-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x00070000000120e4-11.dat	upx
behavioral1/memory/3012-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3012-26-0x0000000000500000-0x0000000000510000-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 2872 wrote to memory of 3012	2872	2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe	28
PID 2872 wrote to memory of 3012	2872	2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe	28
PID 2872 wrote to memory of 3012	2872	2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe	28
PID 2872 wrote to memory of 3012	2872	2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_811d0ddd5a0805bc779fc963f37e0285_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2872
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3012

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
118KB

MD5
9159c65f2acac893dfb8cfff3ab7cb02

SHA1
0d1063084e49fb2e9c8e0c8a25989304e683fa14

SHA256
e2c4ded9eaba19209dfa26886aec65b338f7eacd053f2c764d401ca69ba2a015

SHA512
639f98a81f928563c5147799b9bb16c5892374f0537df4175ef687206709e4845a3b1e20619b386b93e04aae03cdad10c3c982896b48899d599bfd7d9e55e692

Download Submit
memory/2872-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2872-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2872-3-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2872-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2872-14-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3012-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3012-21-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3012-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download