65114d3b20ff207f78061f5ead760581f707369bff3276807c41db6782027f8c

Resubmissions

19/03/2024, 18:11

240319-wsv6csag299

03/03/2024, 11:21

240303-nf56sshf9v9

03/03/2024, 11:15

240303-ncwg7aaa939

Analysis

max time kernel
33s
max time network
48s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03/03/2024, 11:21

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General

Target
o_0/loader.exe
Size 4.1MB
Sample240303-nf56sshf9v
SHA256 60c57f14c2e0e0df0bda16646b21dddceaee0159dafbbb8daba310d4e1b5be6c
MD5 9ecdc9ed1bea6c226f92d740d43400b9
SHA1 b5b5066cd4284733d8c3f3d7de3ca6653091ae10
SHA512 30bc705a2438288e3647d5adfc6119d751823970972b9c6b39a60384a2b7ac261986026b8d1c0b0ca7ee3d7e95363c97b873fdc5fad4096c903cb4e15bf57e43
SSDEEP 98304:vnUGAC+hqc8lqvdzw2nsNKYYURyc9JirsN4JzmUPj:PTn2qcUzp6UYeJRCxPj
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

evasion themida 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__	loader.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	loader.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	loader.exe

Themida packer 13 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral3/memory/2172-0-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-2-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-3-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-4-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-5-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-6-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-7-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-8-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-17-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-18-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-19-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/2172-21-0x000000013F040000-0x000000013FADF000-memory.dmp	themida
behavioral3/memory/1016-22-0x0000000140000000-0x00000001405E8000-memory.dmp	themida

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	loader.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2172	loader.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1016	taskmgr.exe
1016	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1016	taskmgr.exe

Suspicious use of FindShellTrayWindow 13 IoCs

pid	Process
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe

Suspicious use of SendNotifyMessage 13 IoCs

pid	Process
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe
1016	taskmgr.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2172	loader.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2772	2172	loader.exe	28
PID 2172 wrote to memory of 2772	2172	loader.exe	28
PID 2172 wrote to memory of 2772	2172	loader.exe	28
PID 2772 wrote to memory of 2520	2772	cmd.exe	30
PID 2772 wrote to memory of 2520	2772	cmd.exe	30
PID 2772 wrote to memory of 2520	2772	cmd.exe	30
PID 2772 wrote to memory of 1132	2772	cmd.exe	31
PID 2772 wrote to memory of 1132	2772	cmd.exe	31
PID 2772 wrote to memory of 1132	2772	cmd.exe	31
PID 2772 wrote to memory of 2592	2772	cmd.exe	32
PID 2772 wrote to memory of 2592	2772	cmd.exe	32
PID 2772 wrote to memory of 2592	2772	cmd.exe	32

C:\Users\Admin\AppData\Local\Temp\o_0\loader.exe
"C:\Users\Admin\AppData\Local\Temp\o_0\loader.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 use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\o_0\loader.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\o_0\loader.exe" MD5
    3⤵
    PID:2520
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:1132
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:2592

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1016

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

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Downloads

memory/1016-22-0x0000000140000000-0x00000001405E8000-memory.dmp

Download

memory/1016-26-0x0000000140000000-0x00000001405E8000-memory.dmp

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memory/1016-24-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/1016-23-0x0000000140000000-0x00000001405E8000-memory.dmp

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memory/2172-8-0x000000013F040000-0x000000013FADF000-memory.dmp

Download

memory/2172-19-0x000000013F040000-0x000000013FADF000-memory.dmp

Download

memory/2172-6-0x000000013F040000-0x000000013FADF000-memory.dmp

Download

memory/2172-7-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-0-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-17-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-18-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-5-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-20-0x0000000077B60000-0x0000000077D09000-memory.dmp

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memory/2172-21-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-4-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-3-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-2-0x000000013F040000-0x000000013FADF000-memory.dmp

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memory/2172-1-0x0000000077B60000-0x0000000077D09000-memory.dmp

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