aa6563c780185bfa475745ef78495ca61907bf8d130b7613e412fd98a363cd7c

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
06/06/2024, 19:45

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General

Target

2024-06-06_fea238d0fb240e5aeea691cb1445a465_cryptolocker.exe
Size

39KB
MD5

fea238d0fb240e5aeea691cb1445a465
SHA1

991be7d7a1c4a8a0c250ff636571480815f2d848
SHA256

aa6563c780185bfa475745ef78495ca61907bf8d130b7613e412fd98a363cd7c
SHA512

15ef1a3bf398d241d28af10b77d7d090aa31a307e7ca741d1b72a371f0730dffec17e83f6b8244812cb61be897e491462a3ae88c5f4d44c41800b5bd981e408a
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYaBsC:qDdFJy3QMOtEvwDpjjWMl7Tdx

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1764-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002327d-13.dat	CryptoLocker_rule2
behavioral2/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1764-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2980-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1764-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002327d-13.dat	CryptoLocker_set1
behavioral2/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1764-19-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2980-28-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1764-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002327d-13.dat	UPX
behavioral2/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1764-19-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/2980-28-0x0000000000500000-0x0000000000510000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-06-06_fea238d0fb240e5aeea691cb1445a465_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2980	asih.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1764-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002327d-13.dat	upx
behavioral2/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1764-19-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/2980-28-0x0000000000500000-0x0000000000510000-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 1764 wrote to memory of 2980	1764	2024-06-06_fea238d0fb240e5aeea691cb1445a465_cryptolocker.exe	82
PID 1764 wrote to memory of 2980	1764	2024-06-06_fea238d0fb240e5aeea691cb1445a465_cryptolocker.exe	82
PID 1764 wrote to memory of 2980	1764	2024-06-06_fea238d0fb240e5aeea691cb1445a465_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-06_fea238d0fb240e5aeea691cb1445a465_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_fea238d0fb240e5aeea691cb1445a465_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2980

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
39KB

MD5
a0b36a8a3d647f279a717fb9e99bd9b6

SHA1
b583c91e5f883f2b6d17ca8c5c95fa87e4837e9a

SHA256
9385c4a0241ad0ccadc9887e4e5d4e1827e56c9fcf8b8bc7593545602020d2da

SHA512
91a3016c90980b276c47e4c196763a99ce14e563de31aa1e3d1001a0c4111370851e7970a52c73fba8042101624d786e9ae9ef744c0006a542e8cb597e7973b2

Download Submit
memory/1764-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1764-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1764-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1764-2-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/1764-19-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2980-21-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2980-27-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2980-28-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download