modiloader | b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22

Analysis

max time kernel
119s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02/01/2025, 03:23

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General

Target

b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe
Size

90KB
MD5

3c00e14341c5c81c31178f588e2b9161
SHA1

1ca37d09d488cde5939744e040c437081db85f11
SHA256

b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22
SHA512

7baa9ab90e17eee8e4f86da0eacb1372a3c96448c1f683ad6281644fe43f7359e950251cdab30fb1da84aa9b01f9725b8461e7cabe3df5f405ffd5136b775dcb
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDj:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3p

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/4760-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4760-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4760-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4760-63-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe

Executes dropped EXE 3 IoCs

pid	Process
3888	csrsll.exe
1952	csrsll.exe
4760	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-1-5-21-3227495264-2217614367-4027411560-1000\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 1852 set thread context of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 3888 set thread context of 1952	3888	csrsll.exe	95
PID 3888 set thread context of 4760	3888	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1852-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1852-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4848-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4848-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4848-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1852-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0032000000023b70-29.dat	upx
behavioral2/memory/4848-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3888-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3888-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4760-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4760-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4760-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4760-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1952-51-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4760-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3888-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4848-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1952-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4760-63-0x0000000000400000-0x0000000000414000-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	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	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe
Token: SeDebugPrivilege	1952	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe
4848	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe
3888	csrsll.exe
1952	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 1852 wrote to memory of 4848	1852	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	84
PID 4848 wrote to memory of 2308	4848	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	87
PID 4848 wrote to memory of 2308	4848	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	87
PID 4848 wrote to memory of 2308	4848	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	87
PID 2308 wrote to memory of 2508	2308	cmd.exe	90
PID 2308 wrote to memory of 2508	2308	cmd.exe	90
PID 2308 wrote to memory of 2508	2308	cmd.exe	90
PID 4848 wrote to memory of 3888	4848	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	91
PID 4848 wrote to memory of 3888	4848	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	91
PID 4848 wrote to memory of 3888	4848	b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe	91
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 1952	3888	csrsll.exe	95
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96
PID 3888 wrote to memory of 4760	3888	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe
"C:\Users\Admin\AppData\Local\Temp\b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1852
- C:\Users\Admin\AppData\Local\Temp\b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe
  "C:\Users\Admin\AppData\Local\Temp\b873d378c61c50dbad17b3d1070a6cdf85c6d60f3813c8397793f17f99778e22.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4848
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MCQMJ.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2308
  - - 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:2508
- - 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:3888
  - - 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:1952
  - - 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:4760

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

Replay Monitor

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
266f8a61e94062074a9580b1c35d7a13

SHA1
55c3e0cce05858915ffd839c74aba355de3a9c13

SHA256
a5e20fb3461f3b6fd827abc1aaebe2ba0069088e8a88723b1e14bd2d84690107

SHA512
78ffb61613ce2f4083f2dd516c984981ccb83d4e074e7b42f71c382466af0069721cf7b3427698fba3ab2dd6dd975092d1bc569becd12a6933049efc34f85727

Download Submit
memory/1852-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/1852-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/1852-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1852-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/1852-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1852-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1952-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1952-51-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3888-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3888-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3888-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4760-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4760-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4760-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4760-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4760-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4760-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4848-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4848-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4848-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4848-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4848-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads