2ace60ae08128a480331085d3779254653cd0f4dc509e870a69de2fa90872c01

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 04:17

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General

Target

2024-04-21_a2e0ee192bda03d779fee7021ff880cf_cryptolocker.exe
Size

88KB
MD5

a2e0ee192bda03d779fee7021ff880cf
SHA1

b213f9caff64457ac4fb090fccecc09d7284424c
SHA256

2ace60ae08128a480331085d3779254653cd0f4dc509e870a69de2fa90872c01
SHA512

e0e953605d9c2f44f312bc58c25f58f6259f37b4e74c7ca7c0a69dae67ffd39f6450e23f2c9de5f5506375115400c711bbefe704d22364b3df20339c278f2370
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAq:n6a+1SEOtEvwDpjYYvQd2Pq

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_rule2
behavioral2/memory/4744-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2016-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97a-13.dat	CryptoLocker_set1
behavioral2/memory/4744-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2016-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000300000001e97a-13.dat	UPX
behavioral2/memory/4744-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2016-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-21_a2e0ee192bda03d779fee7021ff880cf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2016	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000300000001e97a-13.dat	upx
behavioral2/memory/4744-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2016-25-0x0000000000500000-0x0000000000510000-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 3 IoCs

description	pid	Process	procid_target
PID 4744 wrote to memory of 2016	4744	2024-04-21_a2e0ee192bda03d779fee7021ff880cf_cryptolocker.exe	86
PID 4744 wrote to memory of 2016	4744	2024-04-21_a2e0ee192bda03d779fee7021ff880cf_cryptolocker.exe	86
PID 4744 wrote to memory of 2016	4744	2024-04-21_a2e0ee192bda03d779fee7021ff880cf_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-21_a2e0ee192bda03d779fee7021ff880cf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_a2e0ee192bda03d779fee7021ff880cf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4744
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
89KB

MD5
40c32756947f8d6c9e7bfe114624ed99

SHA1
0420620099cc42d568cd25cd962da304473c77b4

SHA256
196659a1a8b4aaa1869936c100b1e16e3afeee0bd61f23238f379a124836cf2b

SHA512
25c2a1af09961bb54296bf9d8b9e95619bb234b0be17143f62c2fd4a4c18cc9143fc6b25c74516f86a0582761b16b6af8b2995c9e3e13e0879a32256fdfb4c89

Download Submit
memory/2016-19-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/2016-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4744-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4744-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4744-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4744-3-0x0000000000810000-0x0000000000816000-memory.dmp

Filesize
24KB

Download
memory/4744-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download