modiloader | 3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e

Analysis

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

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12/01/2025, 21:50

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General

Target

3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe
Size

90KB
MD5

e8cdc5ddd6ae0f62c06e17ea0579e412
SHA1

f533cb26dca81b88ac384696e1cf282fe576de5a
SHA256

3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e
SHA512

2829dea23e4f39c5ad8fae1699e06dd99d67e19e719ba39a491217567f87c1cc3f0ec05ed2313925f88ad64d0e92c86d08348d79ba9bf5e4de0611336b6fb533
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDC:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE30

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/1928-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1928-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1928-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1928-61-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe

Executes dropped EXE 3 IoCs

pid	Process
3888	csrsll.exe
4536	csrsll.exe
1928	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-1-5-21-4089630652-1596403869-279772308-1000\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 4588 set thread context of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 3888 set thread context of 4536	3888	csrsll.exe	95
PID 3888 set thread context of 1928	3888	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4588-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4588-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2400-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2400-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4588-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2400-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023ca5-29.dat	upx
behavioral2/memory/2400-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3888-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3888-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1928-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1928-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1928-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3888-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1928-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1928-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2400-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4536-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1928-61-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe
Token: SeDebugPrivilege	4536	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe
2400	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe
3888	csrsll.exe
4536	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 4588 wrote to memory of 2400	4588	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	86
PID 2400 wrote to memory of 4896	2400	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	87
PID 2400 wrote to memory of 4896	2400	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	87
PID 2400 wrote to memory of 4896	2400	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	87
PID 4896 wrote to memory of 4908	4896	cmd.exe	90
PID 4896 wrote to memory of 4908	4896	cmd.exe	90
PID 4896 wrote to memory of 4908	4896	cmd.exe	90
PID 2400 wrote to memory of 3888	2400	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	91
PID 2400 wrote to memory of 3888	2400	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	91
PID 2400 wrote to memory of 3888	2400	3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe	91
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 4536	3888	csrsll.exe	95
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96
PID 3888 wrote to memory of 1928	3888	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe
"C:\Users\Admin\AppData\Local\Temp\3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4588
- C:\Users\Admin\AppData\Local\Temp\3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe
  "C:\Users\Admin\AppData\Local\Temp\3b714f8b137f5e7f7c9e9d6088442ec17e3c62aa41cfddab683727595ed39d2e.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2400
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AFUTH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4896
  - - 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:4908
- - 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:4536
  - - 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:1928

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\AFUTH.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
a66c5708ca7cc6674025f68038dadda4

SHA1
2bd71536782484c60c8b9b59eec63a995053e7e7

SHA256
c51db846cd91eb00918c05cf03e4efe10bcd2d8c514c3b51d9485bd07260e885

SHA512
89930ff25c5bc09b9e7fde5b86d7d7195d9d33f318514430f08c6f48cc8157ca861ff56445768742497d5751e1cb9f53177a72e0518181b9a5d6ff36c9276e44

Download Submit
memory/1928-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1928-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1928-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1928-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1928-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1928-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2400-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2400-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2400-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2400-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2400-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2400-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

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

Filesize
332KB

Download
memory/3888-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

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

Filesize
332KB

Download
memory/4536-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4588-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4588-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4588-6-0x0000000002330000-0x0000000002332000-memory.dmp

Filesize
8KB

Download
memory/4588-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/4588-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4588-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads