modiloader | 1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7

Analysis

max time kernel
120s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-01-2025 11:46

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General

Target

1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe
Size

90KB
MD5

559fdf5477d67688a5c6ca1c14005c40
SHA1

f6bbee4f7d05a9a56080cee727a15f32a433b1c7
SHA256

1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7
SHA512

91596dcb64ccd2166c3f4f60351bdbc4bf8678c140fadc82a42cb6c30f113d653c5e9b38fe713924ac96eed4699b4f7dcaed429a0ab1ce843bcde468991734d3
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDR:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3H

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/1696-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1696-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1696-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1696-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe

Executes dropped EXE 3 IoCs

pid	Process
3788	csrsll.exe
456	csrsll.exe
1696	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-1-5-21-3442511616-637977696-3186306149-1000\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 3112 set thread context of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3788 set thread context of 456	3788	csrsll.exe	95
PID 3788 set thread context of 1696	3788	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3112-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3112-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1308-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1308-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3112-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1308-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb0-29.dat	upx
behavioral2/memory/1308-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3788-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3788-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1696-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1696-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1696-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1696-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3788-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1308-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1696-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/456-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1696-62-0x0000000000400000-0x0000000000414000-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	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.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	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe
Token: SeDebugPrivilege	456	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe
1308	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe
3788	csrsll.exe
456	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 3112 wrote to memory of 1308	3112	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	86
PID 1308 wrote to memory of 416	1308	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	87
PID 1308 wrote to memory of 416	1308	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	87
PID 1308 wrote to memory of 416	1308	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	87
PID 416 wrote to memory of 1612	416	cmd.exe	90
PID 416 wrote to memory of 1612	416	cmd.exe	90
PID 416 wrote to memory of 1612	416	cmd.exe	90
PID 1308 wrote to memory of 3788	1308	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	91
PID 1308 wrote to memory of 3788	1308	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	91
PID 1308 wrote to memory of 3788	1308	1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe	91
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 456	3788	csrsll.exe	95
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96
PID 3788 wrote to memory of 1696	3788	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe
"C:\Users\Admin\AppData\Local\Temp\1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3112
- C:\Users\Admin\AppData\Local\Temp\1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe
  "C:\Users\Admin\AppData\Local\Temp\1f9121565f1715e62e09145934c383b266f1a7862a5d253a5eb1ae37a4a0eaa7N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1308
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\AIUYV.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:416
  - - 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:1612
- - 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:3788
  - - 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:456
  - - 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:1696

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\AIUYV.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
9ab06bf086c92a193a964449b7fd236e

SHA1
9738fcc798f21900d3eca93cccddff10139b9adb

SHA256
775102a6195916e597f73944c69bd0dff1eeb919fdc5644444efd4e6fbcbbc2f

SHA512
e1e6d510b862173988a8ea7878ed5541d097f98de04d456183dd3af33c7230f7db11d53db429bbb21772020f00284c78426eafbbc01d2332c967829bdd9d608d

Download Submit
memory/456-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1308-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1308-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1308-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1308-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1308-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1696-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1696-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3112-4-0x0000000002C80000-0x0000000002C82000-memory.dmp

Filesize
8KB

Download
memory/3112-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3112-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3112-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/3112-3-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/3112-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3788-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3788-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3788-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads