modiloader | c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
04-01-2025 05:24

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General

Target

c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe
Size

90KB
MD5

a334e7583fdd5cfac28b791258cf80cb
SHA1

de46468dc55b6740cb93089cb14c5da7f7685b9e
SHA256

c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52
SHA512

915c461d49b277603cdf0c79215bc43710c69c3ca5edb7858b360d3095ad82c7d2206b8889b1a96a73b07a0c8b5580677fdd62f82fbf092bffb5869d687a1e3f
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD9:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3L

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/972-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/972-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/972-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/972-62-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe

Executes dropped EXE 3 IoCs

pid	Process
1000	csrsll.exe
704	csrsll.exe
972	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-1-5-21-940901362-3608833189-1915618603-1000\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 1900 set thread context of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1000 set thread context of 704	1000	csrsll.exe	100
PID 1000 set thread context of 972	1000	csrsll.exe	101

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1900-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1900-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/312-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/312-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/312-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1900-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cb4-29.dat	upx
behavioral2/memory/312-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1000-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1000-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/972-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/972-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/972-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/972-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/972-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1000-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/312-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/704-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/972-62-0x0000000000400000-0x0000000000414000-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	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.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	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe
Token: SeDebugPrivilege	704	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe
312	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe
1000	csrsll.exe
704	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 1900 wrote to memory of 312	1900	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	88
PID 312 wrote to memory of 2072	312	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	91
PID 312 wrote to memory of 2072	312	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	91
PID 312 wrote to memory of 2072	312	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	91
PID 2072 wrote to memory of 4184	2072	cmd.exe	94
PID 2072 wrote to memory of 4184	2072	cmd.exe	94
PID 2072 wrote to memory of 4184	2072	cmd.exe	94
PID 312 wrote to memory of 1000	312	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	95
PID 312 wrote to memory of 1000	312	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	95
PID 312 wrote to memory of 1000	312	c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe	95
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 704	1000	csrsll.exe	100
PID 1000 wrote to memory of 972	1000	csrsll.exe	101
PID 1000 wrote to memory of 972	1000	csrsll.exe	101
PID 1000 wrote to memory of 972	1000	csrsll.exe	101
PID 1000 wrote to memory of 972	1000	csrsll.exe	101
PID 1000 wrote to memory of 972	1000	csrsll.exe	101
PID 1000 wrote to memory of 972	1000	csrsll.exe	101
PID 1000 wrote to memory of 972	1000	csrsll.exe	101
PID 1000 wrote to memory of 972	1000	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe
"C:\Users\Admin\AppData\Local\Temp\c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Users\Admin\AppData\Local\Temp\c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe
  "C:\Users\Admin\AppData\Local\Temp\c75d34bd328ecb4ebdc138426416666129d2483a5820f4ee4a399fefc22f0b52.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:312
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FESIV.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2072
  - - 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:4184
- - 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:1000
  - - 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:704
  - - 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:972

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\FESIV.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
9c4d41d61f7b60f9508e01effba4d8e9

SHA1
93887286f858558a3eeed12517abb9759b2d9820

SHA256
65c175e0fb82fa4ce0617396f4507a54cc701558f32a2803609380ec7f151e00

SHA512
7d2aa395ff6fae51af39dd55f4ad0643152f4c1478d4512603abd740219ecbfacad766c84716226fe19589defdd8081d3575a6d6cda636ce37fa69f582af2595

Download Submit
memory/312-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/312-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/312-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/312-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/312-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/704-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/972-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/972-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/972-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/972-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/972-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/972-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1000-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1000-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1000-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1900-6-0x0000000002340000-0x0000000002342000-memory.dmp

Filesize
8KB

Download
memory/1900-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/1900-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/1900-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1900-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1900-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads