modiloader | b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3

Analysis

max time kernel
58s
max time network
58s
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 20:11

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General

Target

b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe
Size

90KB
MD5

eaba53ee5023974b7880431769aa69d4
SHA1

43c2419e72cd9e20d02b374e74bd0da2ba40a7dc
SHA256

b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3
SHA512

19ad1193628d32af2d3e4099d91f213d461f769e2a2f3c14ebb8d1d2a3bf86b71ab8fdbce267be3791a5c0805c2bcf71df28a2ac9e26d99f85c8f058013d5e9a
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDu:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3w

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/1348-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1348-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1348-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1348-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe

Executes dropped EXE 3 IoCs

pid	Process
1444	csrsll.exe
5008	csrsll.exe
1348	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-1-5-21-4050598569-1597076380-177084960-1000\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 4796 set thread context of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 1444 set thread context of 5008	1444	csrsll.exe	95
PID 1444 set thread context of 1348	1444	csrsll.exe	96

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4796-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4796-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2776-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2776-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2776-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4796-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b8f-29.dat	upx
behavioral2/memory/1444-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2776-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1444-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1444-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1348-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1348-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1348-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1444-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1348-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1348-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2776-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5008-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1348-62-0x0000000000400000-0x0000000000414000-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	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 28 IoCs

description	pid	Process
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe
Token: SeDebugPrivilege	5008	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe
2776	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe
1444	csrsll.exe
5008	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 4796 wrote to memory of 2776	4796	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	82
PID 2776 wrote to memory of 1548	2776	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	85
PID 2776 wrote to memory of 1548	2776	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	85
PID 2776 wrote to memory of 1548	2776	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	85
PID 1548 wrote to memory of 4012	1548	cmd.exe	88
PID 1548 wrote to memory of 4012	1548	cmd.exe	88
PID 1548 wrote to memory of 4012	1548	cmd.exe	88
PID 2776 wrote to memory of 1444	2776	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	89
PID 2776 wrote to memory of 1444	2776	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	89
PID 2776 wrote to memory of 1444	2776	b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe	89
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 5008	1444	csrsll.exe	95
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96
PID 1444 wrote to memory of 1348	1444	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe
"C:\Users\Admin\AppData\Local\Temp\b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Users\Admin\AppData\Local\Temp\b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe
  "C:\Users\Admin\AppData\Local\Temp\b75be305eaf7d4864c316b162114299c33f81d60dbd2003864375d6dba3015a3.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\TAGDS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1548
  - - 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:4012
- - 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:1444
  - - 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:5008
  - - 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:1348

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\TAGDS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
ca748a07b43eb79ff2fb1a52e5c0113b

SHA1
12d86b0fa5ad16950b4e19de6a0a82352d68a279

SHA256
13f37ae9b3f3a668ab106efacfb69e309338099ab859ff85e7d111ef70e685f9

SHA512
a4593ce127917b95de930258028ce346e5e7a21c79dee806faafe752429083d3d8dfe79bbb331ef0c880635edbed4eb39a8884517650f1e51c7a6dccb485f0da

Download Submit
memory/1348-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1348-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1348-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1348-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1348-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1348-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1444-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1444-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1444-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1444-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2776-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2776-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2776-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2776-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2776-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2776-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4796-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4796-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4796-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4796-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/4796-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/4796-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/5008-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads