066263f16c9010350ce6accaad7ee31c4f3f38662ff936b91168ceebab4a21c5

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
06/06/2024, 11:58

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General

Target

2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe
Size

89KB
MD5

c79681ba3b089dd112db66b4d83abe65
SHA1

717364b6bb57427d090816812d5e8a267d97eb5a
SHA256

066263f16c9010350ce6accaad7ee31c4f3f38662ff936b91168ceebab4a21c5
SHA512

db69d4ad6c2e17e436a997f95b150b2d8ab5e0720ff1d749da3e813d8e82f299867f4a627f636ff5895758d0287b122ffed2f3b6cad8259187a1995d70bf7297
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtIODwv:qkmnpomddpMOtEvwDpjJGYQbN/PKwMg6

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/3008-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e000000012279-11.dat	CryptoLocker_rule2
behavioral1/memory/3008-13-0x00000000004E0000-0x00000000004EF000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3044-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/3008-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e000000012279-11.dat	CryptoLocker_set1
behavioral1/memory/3008-13-0x00000000004E0000-0x00000000004EF000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3044-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/3008-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000e000000012279-11.dat	UPX
behavioral1/memory/3008-13-0x00000000004E0000-0x00000000004EF000-memory.dmp	UPX
behavioral1/memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/3044-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3044	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3008	2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/3008-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000e000000012279-11.dat	upx
behavioral1/memory/3008-13-0x00000000004E0000-0x00000000004EF000-memory.dmp	upx
behavioral1/memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/3044-27-0x0000000000500000-0x000000000050F000-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 3008 wrote to memory of 3044	3008	2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe	28
PID 3008 wrote to memory of 3044	3008	2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe	28
PID 3008 wrote to memory of 3044	3008	2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe	28
PID 3008 wrote to memory of 3044	3008	2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_c79681ba3b089dd112db66b4d83abe65_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3008
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3044

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
90KB

MD5
aae305f708b80b9c0b5f980f93b1ff07

SHA1
3fe6dc1d1a55a8a12c73454998241b5c6adfd52f

SHA256
bf2f1c5a2aa6aeb6adc2fb13e9c4a8f73b98b6878082e939a726a1669decdebe

SHA512
5dde316aae248a9d9a41d248ce6bdcf20f4556a54a16bb2c95f8a1b1efee00e89726b80bc7f15709f06544606ccaef16e0e0810235760899a336f968b165b612

Download Submit
memory/3008-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3008-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/3008-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3008-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3008-13-0x00000000004E0000-0x00000000004EF000-memory.dmp

Filesize
60KB

Download
memory/3008-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3044-19-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3044-26-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/3044-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download