a77b88afcca0ba94a8c1d24c00c95c849e4d675134e82bfdd10af98bb613abe3

Analysis

max time kernel
132s
max time network
144s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
22/02/2024, 13:45

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General

Target

2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe
Size

46KB
MD5

5fa791410973dc5a959b69f48c12ea82
SHA1

524539bcc4383d5c62191f3957973eef70ea8ae0
SHA256

a77b88afcca0ba94a8c1d24c00c95c849e4d675134e82bfdd10af98bb613abe3
SHA512

e195ce279d946254e8a9193474d9b07dd9234b7b8e60e0f9e3f448ed1e7a97da6dc75c53904e8556616c9c8e9f759aef5683215b6ef73dcf0180f359f5654c7b
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLtldedQ:xj+VGMOtEvwDpjk/eu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0008000000012253-11.dat	CryptoLocker_rule2
behavioral1/memory/2228-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0008000000012253-11.dat	CryptoLocker_set1
behavioral1/memory/2228-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral1/memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/files/0x0008000000012253-11.dat	INDICATOR_EXE_Packed_MPress
behavioral1/memory/2228-15-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral1/memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Executes dropped EXE 1 IoCs

pid	Process
3016	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2228	2024-02-22_5fa791410973dc5a959b69f48c12ea82_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 2228 wrote to memory of 3016	2228	2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe	28
PID 2228 wrote to memory of 3016	2228	2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe	28
PID 2228 wrote to memory of 3016	2228	2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe	28
PID 2228 wrote to memory of 3016	2228	2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_5fa791410973dc5a959b69f48c12ea82_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3016

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\misid.exe

Filesize
47KB

MD5
d8c4b33edb3821fa68a59b5d548af879

SHA1
8a1ab8d3f5a97c905273ddb301e8a6444a3af6dd

SHA256
2e6e87ff3b06e208b92cde1f7f2c8f2f9a8ca3981dd5b251f3ed7510bc7eaacf

SHA512
db19c317879642037fa696b634b2b8c8705761290fa29e562f5a5418e246ca98e0e64e7e32883814eec0756457b69e2f09f5aa0dbbdb7ff5583d2836ddbf55a5

Download Submit
memory/2228-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2228-1-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2228-2-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2228-4-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/2228-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3016-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3016-20-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3016-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3016-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download