modiloader | f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-12-2024 04:50

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General

Target

f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe
Size

90KB
MD5

a448051e70cb35724cab91bd22e2e7ef
SHA1

ec7d98cea9c6fe138cc23421c2f2aa7c727852ad
SHA256

f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b
SHA512

6c05a866543d63bca45247163675dbe316959a4a6a9aec1dd4627f4471a1261f20b08a58b5585cda29e518cfd445043900a10a2a1ffc448897a87e1dd06a21d8
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDp:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3z

Score

10^/10

modiloader discovery persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader
Modiloader family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/3464-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3464-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3464-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3464-64-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe

Executes dropped EXE 3 IoCs

pid	Process
2940	csrsll.exe
2332	csrsll.exe
3464	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 3256 set thread context of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 2940 set thread context of 2332	2940	csrsll.exe	100
PID 2940 set thread context of 3464	2940	csrsll.exe	101

UPX packed file 19 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3256-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3256-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3696-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3256-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3696-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3696-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b9d-29.dat	upx
behavioral2/memory/3696-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2940-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2940-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3464-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3464-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3464-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3464-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3464-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2940-59-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3696-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2332-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3464-64-0x0000000000400000-0x0000000000414000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe
Token: SeDebugPrivilege	2332	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe
3696	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe
2940	csrsll.exe
2332	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3256 wrote to memory of 3696	3256	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	88
PID 3696 wrote to memory of 4812	3696	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	91
PID 3696 wrote to memory of 4812	3696	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	91
PID 3696 wrote to memory of 4812	3696	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	91
PID 4812 wrote to memory of 3304	4812	cmd.exe	95
PID 4812 wrote to memory of 3304	4812	cmd.exe	95
PID 4812 wrote to memory of 3304	4812	cmd.exe	95
PID 3696 wrote to memory of 2940	3696	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	96
PID 3696 wrote to memory of 2940	3696	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	96
PID 3696 wrote to memory of 2940	3696	f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe	96
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 2332	2940	csrsll.exe	100
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101
PID 2940 wrote to memory of 3464	2940	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe
"C:\Users\Admin\AppData\Local\Temp\f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3256
- C:\Users\Admin\AppData\Local\Temp\f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe
  "C:\Users\Admin\AppData\Local\Temp\f46acf06da33f21875a1bb499fbf666a0088b50254db10f88bd39817ec26342b.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3696
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BRSPX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4812
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
      4⤵
      Adds Run key to start application
      System Location Discovery: System Language Discovery
      PID:3304
- - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2940
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2332
  - - C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
      "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      PID:3464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\BRSPX.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe

Filesize
90KB

MD5
d47dc15ac5fb6ef52520cb34e50fcde4

SHA1
54c2f3bca1f26d24d3c77f4536ff24099c480a00

SHA256
e7aeca9c7499e66e2f3b958a65f510d7f33910ed7df028f755d39a8e3ecc2051

SHA512
6e60d527577cc88d92816c88ce6b3efc43af586cca92c4463893816990ac997c8df435ebbc691f69c02568ff096275447c76de3350f432399fb38f69c6dcf0ca

Download Submit
memory/2332-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2940-59-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2940-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2940-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3256-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3256-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3256-3-0x00000000021B0000-0x00000000021B2000-memory.dmp

Filesize
8KB

Download
memory/3256-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3256-6-0x00000000021E0000-0x00000000021E2000-memory.dmp

Filesize
8KB

Download
memory/3256-5-0x00000000021D0000-0x00000000021D2000-memory.dmp

Filesize
8KB

Download
memory/3464-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3464-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3464-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3464-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3464-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3464-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3696-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3696-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3696-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads