0213a0d183b593976c20511515be077f94595a3993bfc496e9c4783a506c147e

Resubmissions

26/09/2022, 13:23

220926-qm7djsahd3 9

26/09/2022, 13:23

220926-qmv1hscagq 1

26/09/2022, 13:21

220926-ql5tbsahc8 1

25/09/2022, 11:08

220925-m8t4kaffem 3

Analysis

max time kernel
58s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
26/09/2022, 13:23

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Report Analysis Logs

General

Target

StOMW0ci.dll
Size

2.5MB
MD5

30f0b4c68317a320227389dc671e32c2
SHA1

4cc428c3355504fbc7fa68ab44c4f8c43938adc1
SHA256

0213a0d183b593976c20511515be077f94595a3993bfc496e9c4783a506c147e
SHA512

9f8f9651189a84f9177d2ac14bb73f563f549127e5b5700892127911f93edfb5f80a40469eefa37d0baa2073c47c9b5d01d47cee831fa704ac77d1972bedf746
SSDEEP

49152:/UV3vnVxDtgL47ZbH8TGN8DC9Vj7iRJrd1skW3/gsykrC+PhqJlT89i3FCQuweF7:SVNtSYZbH8TGNYC9Vj7iRJrbskg/gsya

Score

9^/10

evasion

Malware Config

Signatures

Enumerates VirtualBox registry keys 2 TTPs 5 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo	rundll32.exe

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__	rundll32.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__	rundll32.exe

Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions	rundll32.exe

Checks BIOS information in registry 2 TTPs 3 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	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	rundll32.exe

Identifies Wine through registry keys 2 TTPs 1 IoCs

Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Wine	rundll32.exe

Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs

pid	Process
1840	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1172	1824	WerFault.exe	9

Suspicious behavior: EnumeratesProcesses 42 IoCs

pid	Process
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe
1840	rundll32.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 1172	1824	rundll32.exe	27
PID 1824 wrote to memory of 1172	1824	rundll32.exe	27
PID 1824 wrote to memory of 1172	1824	rundll32.exe	27
PID 1960 wrote to memory of 1840	1960	cmd.exe	30
PID 1960 wrote to memory of 1840	1960	cmd.exe	30
PID 1960 wrote to memory of 1840	1960	cmd.exe	30

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\StOMW0ci.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1824
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1824 -s 84
  2⤵
  - Program crash
  PID:1172

C:\Windows\system32\cmd.exe
"C:\Windows\system32\cmd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1960
- \??\c:\Windows\System32\rundll32.exe
  c:\Windows\System32\rundll32.exe StOMW0ci.dll, maincase
  2⤵
  - Enumerates VirtualBox registry keys
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Looks for VirtualBox Guest Additions in registry
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Suspicious use of NtCreateThreadExHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:1840

Network

MITRE ATT&CK Enterprise v6

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

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Downloads

memory/1840-56-0x0000000001DA0000-0x0000000001EF3000-memory.dmp

Filesize
1.3MB

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