5a8d010d380ee8c7387c9561f6cdcc8bdbb0a9e75c74b07d14d2ca714f4c68a6

Analysis

max time kernel
1795s
max time network
1169s
platform
windows10-2004_x64
resource
win10v2004-20230915-en
resource tags

arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
submitted
20-09-2023 16:44

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

fragment_client.exe
Size

15.1MB
MD5

a82ce8e0d380064226968cca3be82e5e
SHA1

b29842ef68c5189731f2304cff06b31441b384ed
SHA256

5a8d010d380ee8c7387c9561f6cdcc8bdbb0a9e75c74b07d14d2ca714f4c68a6
SHA512

8e8494d60ede5ce0189d8a243e26d371eff195fafaa4f66bf87546efe309b27d7be81e1fd760b172602e0143605dbe5e5ab464e82195cc1b92fed0c5a29d5273
SSDEEP

393216:VwiEwIRpVska4GWfaPKCK71H7n8Q9I75oWq6CsmqDVY0C0Cm2Y5ogyt:GiEwIR3ska4VfYsxHb8/75xEsmcW2T52

Score

9^/10

evasion trojan

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	fragment_client.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	fragment_client.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	fragment_client.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	fragment_client.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs

pid	Process
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe
5016	fragment_client.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5016 wrote to memory of 3548	5016	fragment_client.exe	91
PID 5016 wrote to memory of 3548	5016	fragment_client.exe	91
PID 3548 wrote to memory of 1588	3548	cmd.exe	92
PID 3548 wrote to memory of 1588	3548	cmd.exe	92
PID 3548 wrote to memory of 4896	3548	cmd.exe	94
PID 3548 wrote to memory of 4896	3548	cmd.exe	94
PID 3548 wrote to memory of 3892	3548	cmd.exe	93
PID 3548 wrote to memory of 3892	3548	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\fragment_client.exe
"C:\Users\Admin\AppData\Local\Temp\fragment_client.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:5016
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\fragment_client.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3548
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\fragment_client.exe" MD5
    3⤵
    PID:1588
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:3892
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:4896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/5016-0-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-1-0x00007FFD30C30000-0x00007FFD30E25000-memory.dmp

Filesize
2.0MB

Download
memory/5016-2-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-3-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-4-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-5-0x00007FFD30C30000-0x00007FFD30E25000-memory.dmp

Filesize
2.0MB

Download
memory/5016-6-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-7-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-8-0x00007FFD30C30000-0x00007FFD30E25000-memory.dmp

Filesize
2.0MB

Download
memory/5016-9-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-10-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-11-0x00007FFD30C30000-0x00007FFD30E25000-memory.dmp

Filesize
2.0MB

Download
memory/5016-12-0x0000000140000000-0x000000014288B000-memory.dmp

Filesize
40.5MB

Download
memory/5016-13-0x00007FFD30C30000-0x00007FFD30E25000-memory.dmp

Filesize
2.0MB

Download