systembc | ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de

General

Target

ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
Size

799.1MB
MD5

c92f10574719f64de71f15142e927922
SHA1

bc1c5d3a8481f8fda448c55d821da9b2f55fed66
SHA256

ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de
SHA512

b0a51feeb6053602eb56a354b25e1ef7d39856e1daa648a8186546476b7f67358c4c40978035fbf246df00323587cfc309506a60a1e5354a86ac6f8c81db87d6
SSDEEP

98304:NjtiC2lkD5L18CJVE0CGTtHdxpXP3UDSMOKS6gqiLZFIfbdSK3m:VtP58CrZf3iVrS6gqCZFcxD2

Score

10^/10

systembc evasion persistence themida trojan

Malware Config

Extracted

Family

systembc

C2

212.8.244.5:4001

192.168.1.149:4001

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Local\\Microsoft\\Windows\\INetCache\\cache\\minloapi.exe,"	reg.exe

SystemBC
SystemBC is a proxy and remote administration tool first seen in 2019.
trojan systembc

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

Processes:

minloapi.exeba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	minloapi.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe

Executes dropped EXE 2 IoCs

Processes:

minloapi.exeminloapi.exe

pid process

1964 minloapi.exe
2728 minloapi.exe

pid	process
1964	minloapi.exe
2728	minloapi.exe

Checks BIOS information in registry 2 TTPs 4 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exeminloapi.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	minloapi.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	minloapi.exe

Themida packer 10 IoCs

Detects Themida, an advanced Windows software protection system.

themida

Processes:

resource	yara_rule
behavioral2/memory/4840-137-0x00000000009E0000-0x0000000001678000-memory.dmp	themida
behavioral2/memory/4840-138-0x00000000009E0000-0x0000000001678000-memory.dmp	themida
behavioral2/memory/4840-148-0x00000000009E0000-0x0000000001678000-memory.dmp	themida
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe	themida
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe	themida
behavioral2/memory/1964-161-0x0000000000070000-0x0000000000D08000-memory.dmp	themida
behavioral2/memory/1964-162-0x0000000000070000-0x0000000000D08000-memory.dmp	themida
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe	themida
behavioral2/memory/1964-175-0x0000000000070000-0x0000000000D08000-memory.dmp	themida
behavioral2/memory/2728-177-0x0000000000070000-0x0000000000D08000-memory.dmp	themida

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

minloapi.exeba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	minloapi.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

Processes:

ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exeminloapi.exe

pid process

4840 ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
1964 minloapi.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

minloapi.exe

description pid process target process

PID 1964 set thread context of 2728 1964 minloapi.exe minloapi.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3604 2728 WerFault.exe minloapi.exe
Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery
T1018

Processes:

PING.EXEPING.EXEPING.EXE

pid process

4476 PING.EXE
4236 PING.EXE
3404 PING.EXE

description	pid	process	target process
PID 1964 set thread context of 2728	1964	minloapi.exe	minloapi.exe

pid	pid_target	process	target process
3604	2728	WerFault.exe	minloapi.exe

pid	process
4476	PING.EXE
4236	PING.EXE
3404	PING.EXE

Suspicious behavior: EnumeratesProcesses 31 IoCs

Processes:

ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exeminloapi.exe

pid	process
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
1964	minloapi.exe
1964	minloapi.exe
1964	minloapi.exe
1964	minloapi.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exeminloapi.exe

description	pid	process
Token: SeDebugPrivilege	4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
Token: SeDebugPrivilege	1964	minloapi.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.execmd.execmd.exeminloapi.exe

description	pid	process	target process
PID 4840 wrote to memory of 3628	4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe	cmd.exe
PID 4840 wrote to memory of 3628	4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe	cmd.exe
PID 4840 wrote to memory of 3628	4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe	cmd.exe
PID 3628 wrote to memory of 3404	3628	cmd.exe	PING.EXE
PID 3628 wrote to memory of 3404	3628	cmd.exe	PING.EXE
PID 3628 wrote to memory of 3404	3628	cmd.exe	PING.EXE
PID 4840 wrote to memory of 1192	4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe	cmd.exe
PID 4840 wrote to memory of 1192	4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe	cmd.exe
PID 4840 wrote to memory of 1192	4840	ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe	cmd.exe
PID 1192 wrote to memory of 4476	1192	cmd.exe	PING.EXE
PID 1192 wrote to memory of 4476	1192	cmd.exe	PING.EXE
PID 1192 wrote to memory of 4476	1192	cmd.exe	PING.EXE
PID 3628 wrote to memory of 3456	3628	cmd.exe	reg.exe
PID 3628 wrote to memory of 3456	3628	cmd.exe	reg.exe
PID 3628 wrote to memory of 3456	3628	cmd.exe	reg.exe
PID 1192 wrote to memory of 4236	1192	cmd.exe	PING.EXE
PID 1192 wrote to memory of 4236	1192	cmd.exe	PING.EXE
PID 1192 wrote to memory of 4236	1192	cmd.exe	PING.EXE
PID 1192 wrote to memory of 1964	1192	cmd.exe	minloapi.exe
PID 1192 wrote to memory of 1964	1192	cmd.exe	minloapi.exe
PID 1192 wrote to memory of 1964	1192	cmd.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe
PID 1964 wrote to memory of 2728	1964	minloapi.exe	minloapi.exe

C:\Users\Admin\AppData\Local\Temp\ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe
"C:\Users\Admin\AppData\Local\Temp\ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4840

C:\Windows\SysWOW64\cmd.exe
"cmd" /c ping 127.0.0.1 -n 38 > nul && REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe,"
2⤵
- Suspicious use of WriteProcessMemory
PID:3628

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 38
3⤵
- Runs ping.exe
PID:3404

C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows NT\CurrentVersion\Winlogon" /f /v "Shell" /t REG_SZ /d "explorer.exe,C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe,"
3⤵
- Modifies WinLogon for persistence
PID:3456

C:\Windows\SysWOW64\cmd.exe
"cmd" /c ping 127.0.0.1 -n 49 > nul && copy "C:\Users\Admin\AppData\Local\Temp\ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de.exe" "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe" && ping 127.0.0.1 -n 49 > nul && "C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1192

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 49
3⤵
- Runs ping.exe
PID:4476

C:\Windows\SysWOW64\PING.EXE
ping 127.0.0.1 -n 49
3⤵
- Runs ping.exe
PID:4236

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe
"C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe"
3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1964

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe
"C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe"
4⤵
- Executes dropped EXE
PID:2728

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2728 -s 452
5⤵
- Program crash
PID:3604

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2728 -ip 2728
1⤵
PID:3624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1

T1004

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

2

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe

Filesize
799.1MB

MD5
c92f10574719f64de71f15142e927922

SHA1
bc1c5d3a8481f8fda448c55d821da9b2f55fed66

SHA256
ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de

SHA512
b0a51feeb6053602eb56a354b25e1ef7d39856e1daa648a8186546476b7f67358c4c40978035fbf246df00323587cfc309506a60a1e5354a86ac6f8c81db87d6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe

Filesize
799.1MB

MD5
c92f10574719f64de71f15142e927922

SHA1
bc1c5d3a8481f8fda448c55d821da9b2f55fed66

SHA256
ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de

SHA512
b0a51feeb6053602eb56a354b25e1ef7d39856e1daa648a8186546476b7f67358c4c40978035fbf246df00323587cfc309506a60a1e5354a86ac6f8c81db87d6

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\INetCache\cache\minloapi.exe

Filesize
799.1MB

MD5
c92f10574719f64de71f15142e927922

SHA1
bc1c5d3a8481f8fda448c55d821da9b2f55fed66

SHA256
ba137558e3d88cd6d9bb8b5d06662b6de3c878fcbec37cac07a617538df045de

SHA512
b0a51feeb6053602eb56a354b25e1ef7d39856e1daa648a8186546476b7f67358c4c40978035fbf246df00323587cfc309506a60a1e5354a86ac6f8c81db87d6

Download Submit
memory/1192-146-0x0000000000000000-mapping.dmp

Download
memory/1964-158-0x00000000772D0000-0x0000000077473000-memory.dmp

Filesize
1.6MB

Download
memory/1964-161-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/1964-152-0x0000000000000000-mapping.dmp

Download
memory/1964-157-0x00000000772D0000-0x0000000077473000-memory.dmp

Filesize
1.6MB

Download
memory/1964-156-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/1964-155-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/1964-162-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/1964-175-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/1964-176-0x00000000772D0000-0x0000000077473000-memory.dmp

Filesize
1.6MB

Download
memory/2728-163-0x0000000000000000-mapping.dmp

Download
memory/2728-164-0x0000000000400000-0x0000000000407000-memory.dmp

Filesize
28KB

Download
memory/2728-177-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/2728-174-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/2728-173-0x0000000000070000-0x0000000000D08000-memory.dmp

Filesize
12.6MB

Download
memory/2728-172-0x0000000000DD0000-0x0000000000DD7000-memory.dmp

Filesize
28KB

Download
memory/2728-169-0x0000000000DD0000-0x0000000000DD7000-memory.dmp

Filesize
28KB

Download
memory/2728-166-0x0000000000DD0000-0x0000000000DD7000-memory.dmp

Filesize
28KB

Download
memory/3404-144-0x0000000000000000-mapping.dmp

Download
memory/3456-150-0x0000000000000000-mapping.dmp

Download
memory/3628-143-0x0000000000000000-mapping.dmp

Download
memory/4236-151-0x0000000000000000-mapping.dmp

Download
memory/4476-147-0x0000000000000000-mapping.dmp

Download
memory/4840-138-0x00000000009E0000-0x0000000001678000-memory.dmp

Filesize
12.6MB

Download
memory/4840-132-0x00000000009E0000-0x0000000001678000-memory.dmp

Filesize
12.6MB

Download
memory/4840-142-0x0000000006FD0000-0x0000000006FDA000-memory.dmp

Filesize
40KB

Download
memory/4840-137-0x00000000009E0000-0x0000000001678000-memory.dmp

Filesize
12.6MB

Download
memory/4840-148-0x00000000009E0000-0x0000000001678000-memory.dmp

Filesize
12.6MB

Download
memory/4840-145-0x00000000772D0000-0x0000000077473000-memory.dmp

Filesize
1.6MB

Download
memory/4840-139-0x00000000061B0000-0x0000000006754000-memory.dmp

Filesize
5.6MB

Download
memory/4840-140-0x0000000005AB0000-0x0000000005B42000-memory.dmp

Filesize
584KB

Download
memory/4840-141-0x0000000005B50000-0x0000000005BEC000-memory.dmp

Filesize
624KB

Download
memory/4840-134-0x00000000009E0000-0x0000000001678000-memory.dmp

Filesize
12.6MB

Download
memory/4840-133-0x00000000772D0000-0x0000000077473000-memory.dmp

Filesize
1.6MB

Download
memory/4840-149-0x00000000772D0000-0x0000000077473000-memory.dmp

Filesize
1.6MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads