modiloader | 4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 21:25

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General

Target

4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe
Size

90KB
MD5

cdc051d729ce92e2637a961870010874
SHA1

85b7eceaa53a9c0bff429ccd4bef7fb4bf45c23e
SHA256

4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb
SHA512

8880fe201d1af9f51605911c3da51eaffb31281439ce1cb444657f57b2bcf14553ea8c50fbcfab8a1944fe63c3f3d1c6d113a0c64ede04ca5a6d374d0f3e0131
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4940-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4940-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4940-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4940-64-0x0000000000400000-0x0000000000414000-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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe

Executes dropped EXE 3 IoCs

pid	Process
1720	csrsll.exe
1416	csrsll.exe
4940	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-1-5-21-2170637797-568393320-3232933035-1000\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 2352 set thread context of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 1720 set thread context of 1416	1720	csrsll.exe	103
PID 1720 set thread context of 4940	1720	csrsll.exe	104

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2352-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2352-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2436-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2436-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2436-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2352-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000800000002360c-29.dat	upx
behavioral2/memory/1720-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2436-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1720-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1720-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4940-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1720-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4940-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4940-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4940-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4940-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2436-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1416-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4940-64-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe
Token: SeDebugPrivilege	1416	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe
2436	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe
1720	csrsll.exe
1416	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2352 wrote to memory of 2436	2352	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	92
PID 2436 wrote to memory of 4496	2436	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	95
PID 2436 wrote to memory of 4496	2436	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	95
PID 2436 wrote to memory of 4496	2436	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	95
PID 4496 wrote to memory of 2828	4496	cmd.exe	98
PID 4496 wrote to memory of 2828	4496	cmd.exe	98
PID 4496 wrote to memory of 2828	4496	cmd.exe	98
PID 2436 wrote to memory of 1720	2436	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	99
PID 2436 wrote to memory of 1720	2436	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	99
PID 2436 wrote to memory of 1720	2436	4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe	99
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 1416	1720	csrsll.exe	103
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104
PID 1720 wrote to memory of 4940	1720	csrsll.exe	104

C:\Users\Admin\AppData\Local\Temp\4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe
"C:\Users\Admin\AppData\Local\Temp\4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Users\Admin\AppData\Local\Temp\4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe
  "C:\Users\Admin\AppData\Local\Temp\4f22fd487a4358ae4be9cc056232dfceb857355c46c1397255aa0f12cc97beeb.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2436
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FXPLG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4496
  - - 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:2828
- - 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:1720
  - - 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:1416
  - - 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:4940

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1016,i,3861745594156495651,17595114179815238301,262144 --variations-seed-version --mojo-platform-channel-handle=4372 /prefetch:8
1⤵
PID:4332

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\FXPLG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
f4f18ef7639aa76572c0a69ecae3caef

SHA1
bf41ef432ed97c03bb16067b313d9f97507a6969

SHA256
d1641a000a4a606182654f1d07925f74ab304fdba12bce5f458f9f1659dc89d5

SHA512
073288aaa4d2483266128dc319b5e3e34b28a825232f6f2bc18f69978abc8e19824f418914ebda97162a8fd241352609821b634ff64fa31f900ab90ad25f5d57

Download Submit
memory/1416-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1720-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1720-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1720-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1720-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2352-6-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/2352-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2352-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2352-5-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/2352-3-0x00000000022D0000-0x00000000022D2000-memory.dmp

Filesize
8KB

Download
memory/2352-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2436-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2436-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2436-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4940-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4940-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4940-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4940-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4940-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4940-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads