modiloader | 12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee

Analysis

max time kernel
119s
max time network
123s
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, 20:44

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General

Target

12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe
Size

90KB
MD5

3783f53540d2dabcdbd882058685f0ee
SHA1

886aa3b4383bb3dee9d3cf9677108986a890819a
SHA256

12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee
SHA512

e6a8c6a00d94ee45f8eaeff995bfac0fd7fe0bc7a62e0e74ad3e468412e274b28e3a787765270ce47d1c669397f0395650dda0d4114bfac1bcfcea5385ddc272
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDQ: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/4440-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4440-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4440-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4440-61-0x0000000000400000-0x0000000000414000-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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe

Executes dropped EXE 3 IoCs

pid	Process
3652	csrsll.exe
4928	csrsll.exe
4440	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 1128 set thread context of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 3652 set thread context of 4928	3652	csrsll.exe	92
PID 3652 set thread context of 4440	3652	csrsll.exe	93

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1128-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1128-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/316-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1128-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/316-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/316-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b88-28.dat	upx
behavioral2/memory/316-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3652-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3652-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4440-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4440-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4440-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4440-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4440-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3652-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/316-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4928-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4440-61-0x0000000000400000-0x0000000000414000-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	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe
Token: SeDebugPrivilege	4928	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe
316	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe
3652	csrsll.exe
4928	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 1128 wrote to memory of 316	1128	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	82
PID 316 wrote to memory of 3216	316	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	83
PID 316 wrote to memory of 3216	316	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	83
PID 316 wrote to memory of 3216	316	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	83
PID 3216 wrote to memory of 3800	3216	cmd.exe	86
PID 3216 wrote to memory of 3800	3216	cmd.exe	86
PID 3216 wrote to memory of 3800	3216	cmd.exe	86
PID 316 wrote to memory of 3652	316	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	87
PID 316 wrote to memory of 3652	316	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	87
PID 316 wrote to memory of 3652	316	12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe	87
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4928	3652	csrsll.exe	92
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93
PID 3652 wrote to memory of 4440	3652	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe
"C:\Users\Admin\AppData\Local\Temp\12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1128
- C:\Users\Admin\AppData\Local\Temp\12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe
  "C:\Users\Admin\AppData\Local\Temp\12b39b53b5f8d6fb50dc6306e0c3ec9cfdfb034c0f76d2be71d31807719032ee.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:316
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RFGCA.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3216
  - - 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:3800
- - 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:3652
  - - 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:4928
  - - 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:4440

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\RFGCA.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
50d7e206b3812c3939e6d9db934c6acd

SHA1
2d4146e713facb52ece0b916809c46c54e795df3

SHA256
7e96fda987276f4a9352cdc295ca9110190fdfe8a35fb8d9a35699b11d589a66

SHA512
50613ae888f721db639737fe407c9160bdcd6b01dc3cdb4e89274ce578523d68e18597b3ca1316dbcc45fb6f0c4cfe99a18769f8aa2dad6167e39323dde67a0d

Download Submit
memory/316-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/316-57-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/316-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/316-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/316-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/316-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1128-4-0x0000000002A40000-0x0000000002A42000-memory.dmp

Filesize
8KB

Download
memory/1128-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1128-6-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/1128-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1128-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1128-3-0x0000000002A30000-0x0000000002A32000-memory.dmp

Filesize
8KB

Download
memory/3652-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3652-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3652-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4440-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4440-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4440-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4440-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4440-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4440-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4928-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads