modiloader | 4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-01-2025 07:32

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General

Target

4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
Size

90KB
MD5

4e10a818a9097d1d6f24d08687829afb
SHA1

4cd3260fb0849429343101558503e3d69fda3097
SHA256

4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6
SHA512

909a7d8fba8bcab5d2a6fd885444a3f2a2d09a506993142a9aa09370e01e1bbf1443d5cbcd96b5af82b7ba713b39262080614c111cae2f2b518aa5cf74b4baa6
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDm:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3k

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/1544-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1544-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1544-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1544-62-0x0000000000400000-0x0000000000414000-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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe

Executes dropped EXE 3 IoCs

pid	Process
1384	csrsll.exe
5092	csrsll.exe
1544	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-1-5-21-2437139445-1151884604-3026847218-1000\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 2380 set thread context of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 1384 set thread context of 5092	1384	csrsll.exe	98
PID 1384 set thread context of 1544	1384	csrsll.exe	99

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2380-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2380-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4304-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4304-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2380-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4304-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000400000001e767-29.dat	upx
behavioral2/memory/4304-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1384-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1384-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1544-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1544-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1544-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1544-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1544-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1384-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4304-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5092-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1544-62-0x0000000000400000-0x0000000000414000-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	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.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	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe
Token: SeDebugPrivilege	5092	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
4304	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
1384	csrsll.exe
5092	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 2380 wrote to memory of 4304	2380	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	84
PID 4304 wrote to memory of 396	4304	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	85
PID 4304 wrote to memory of 396	4304	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	85
PID 4304 wrote to memory of 396	4304	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	85
PID 396 wrote to memory of 1288	396	cmd.exe	89
PID 396 wrote to memory of 1288	396	cmd.exe	89
PID 396 wrote to memory of 1288	396	cmd.exe	89
PID 4304 wrote to memory of 1384	4304	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	90
PID 4304 wrote to memory of 1384	4304	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	90
PID 4304 wrote to memory of 1384	4304	4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe	90
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 5092	1384	csrsll.exe	98
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99
PID 1384 wrote to memory of 1544	1384	csrsll.exe	99

C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
"C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe
  "C:\Users\Admin\AppData\Local\Temp\4b182999dd3f63e4a850f3fc0ae93a9ecdd81072a08b51b05fd231dee86c94d6.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4304
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BDGRS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:396
  - - 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:1288
- - 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:1384
  - - 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:5092
  - - 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:1544

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\BDGRS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
5ed9393ef24545bea9a92290843609c1

SHA1
6dc21c6e182113dc3b759d79f02fed16740f8230

SHA256
af246140b1890e1dc0a6c6ffd9756ba0826c4567b1d372027d41804566b8eb8a

SHA512
1fccb851a72f40086ceeb3124643bbed0248ea58914c0159f9e4b4b055901c5e34cb17839d7e6f28f8a04418770ee592a8fdeb1824f78f39db345697c5e8bf8f

Download Submit
memory/1384-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1384-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1384-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1544-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1544-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2380-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2380-4-0x0000000002420000-0x0000000002422000-memory.dmp

Filesize
8KB

Download
memory/2380-6-0x0000000002440000-0x0000000002442000-memory.dmp

Filesize
8KB

Download
memory/2380-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2380-3-0x0000000002410000-0x0000000002412000-memory.dmp

Filesize
8KB

Download
memory/2380-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4304-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4304-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4304-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4304-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4304-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5092-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads