f0bd6236ae04d1a7e53575e21a8ec4cced336b5585296766d4acb3538ad09807

General

Target

celex.exe
Size

4.0MB
MD5

c874dc90720f9240b8b95897d2d696bf
SHA1

8b6d7cff1b0f85c83157b96d86b828372bf45876
SHA256

f0bd6236ae04d1a7e53575e21a8ec4cced336b5585296766d4acb3538ad09807
SHA512

da7dd92b8390f339dba9e835f556b28fa5baf536f455641de5529aa5747fb510561a3b7e36f21db0c7049b883b9570396e71f08033edde9573cca0f8953f9aef
SSDEEP

98304:BBPWkrg/6NgmYJ+PZ/ROLbvqEufbV14C5jnlAd706/yIhBfev9MgT:BJHg/WgvJqQvHufb4UzmdRg5

Score

9^/10

evasion persistence 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__	celex.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\frAQBc8Wsa1xVPfv\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\frAQBc8Wsa1xVPfv"	celex.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	celex.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	celex.exe

Themida packer 11 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/1284-0-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-2-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-3-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-4-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-5-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-6-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-7-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-8-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-15-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-16-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp	themida
behavioral2/memory/1284-17-0x00007FF719EB0000-0x00007FF71A956000-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	celex.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
1284	celex.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
1284	celex.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeLoadDriverPrivilege	1284	celex.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 1988	1284	celex.exe	88
PID 1284 wrote to memory of 1988	1284	celex.exe	88
PID 1988 wrote to memory of 2560	1988	cmd.exe	90
PID 1988 wrote to memory of 2560	1988	cmd.exe	90
PID 1988 wrote to memory of 1424	1988	cmd.exe	91
PID 1988 wrote to memory of 1424	1988	cmd.exe	91
PID 1988 wrote to memory of 388	1988	cmd.exe	92
PID 1988 wrote to memory of 388	1988	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\celex.exe
"C:\Users\Admin\AppData\Local\Temp\celex.exe"
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Sets service image path in registry
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: LoadsDriver
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\celex.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1988
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\celex.exe" MD5
    3⤵
    PID:2560
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:1424
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1284-0-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-1-0x00007FFDB3290000-0x00007FFDB3485000-memory.dmp

Filesize
2.0MB

Download
memory/1284-2-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-3-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-4-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-5-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-6-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-7-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-8-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-15-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-16-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-17-0x00007FF719EB0000-0x00007FF71A956000-memory.dmp

Filesize
10.6MB

Download
memory/1284-18-0x00007FFDB3290000-0x00007FFDB3485000-memory.dmp

Filesize
2.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads