e397c0ce82e78b1060cfc09e4ef5e7cd7353f8203914cee16cc24aeba1249150

General

Target

celex.exe
Size

3.9MB
MD5

38269ac5c847b548c5f869e51e0279a0
SHA1

a11c1c1def92795754810f693c015238b9de0a3f
SHA256

e397c0ce82e78b1060cfc09e4ef5e7cd7353f8203914cee16cc24aeba1249150
SHA512

d08c1cc0849dbd9540f47d849069b54ce34a16100c3e6c568354864cb404d739fbb00e7f158cf4d509f22488899d7981f55d0a76f24314bdd07e5a2f61ffc4fc
SSDEEP

98304:R3QClHCWedxAdQni/B8xSVj7KGrPAkTl7VEtBb/JB8EDC:liWekdQn65Vj7drokTl7V+t2EDC

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 10 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/memory/2108-0-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-2-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-3-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-4-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-6-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-7-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-8-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-5-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-17-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp	themida
behavioral2/memory/2108-19-0x00007FF7E90D0000-0x00007FF7E9B20000-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
2108	celex.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
2108	celex.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeLoadDriverPrivilege	2108	celex.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2108 wrote to memory of 2236	2108	celex.exe	89
PID 2108 wrote to memory of 2236	2108	celex.exe	89
PID 2236 wrote to memory of 4280	2236	cmd.exe	91
PID 2236 wrote to memory of 4280	2236	cmd.exe	91
PID 2236 wrote to memory of 3924	2236	cmd.exe	92
PID 2236 wrote to memory of 3924	2236	cmd.exe	92
PID 2236 wrote to memory of 1544	2236	cmd.exe	93
PID 2236 wrote to memory of 1544	2236	cmd.exe	93

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:2108
- 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:2236
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\celex.exe" MD5
    3⤵
    PID:4280
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:3924
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:1544

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/2108-0-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-1-0x00007FFE21E10000-0x00007FFE21E12000-memory.dmp

Filesize
8KB

Download
memory/2108-2-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-3-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-4-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-6-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-7-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-8-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-5-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-17-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download
memory/2108-19-0x00007FF7E90D0000-0x00007FF7E9B20000-memory.dmp

Filesize
10.3MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads