modiloader | 8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0

Analysis

max time kernel
119s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-01-2025 15:26

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General

Target

8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe
Size

90KB
MD5

979dc29055c1e1417da1a9928103f9e8
SHA1

46c3b8faf57221aa7701779f1eeb87d6febe3423
SHA256

8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0
SHA512

1a987e11ec01f7602bb78cdb665db0807ec6589c547023f98c9351d0faca585a8937df1d6c75213bcf7542d3716989a67356aeef81ed35c9ccd78f3dffa1bfce
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDi: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/4220-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4220-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4220-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4220-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe

Executes dropped EXE 3 IoCs

pid	Process
1136	csrsll.exe
4516	csrsll.exe
4220	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-1-5-21-4089630652-1596403869-279772308-1000\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 3188 set thread context of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 1136 set thread context of 4516	1136	csrsll.exe	95
PID 1136 set thread context of 4220	1136	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3188-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3188-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1704-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1704-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3188-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1704-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b6e-30.dat	upx
behavioral2/memory/1704-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1136-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1136-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4220-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1136-55-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4220-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4220-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1704-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4220-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4220-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4516-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4220-62-0x0000000000400000-0x0000000000414000-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	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	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe
Token: SeDebugPrivilege	4516	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe
1704	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe
1136	csrsll.exe
4516	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 3188 wrote to memory of 1704	3188	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	86
PID 1704 wrote to memory of 2528	1704	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	87
PID 1704 wrote to memory of 2528	1704	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	87
PID 1704 wrote to memory of 2528	1704	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	87
PID 2528 wrote to memory of 244	2528	cmd.exe	90
PID 2528 wrote to memory of 244	2528	cmd.exe	90
PID 2528 wrote to memory of 244	2528	cmd.exe	90
PID 1704 wrote to memory of 1136	1704	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	91
PID 1704 wrote to memory of 1136	1704	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	91
PID 1704 wrote to memory of 1136	1704	8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe	91
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4516	1136	csrsll.exe	95
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96
PID 1136 wrote to memory of 4220	1136	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe
"C:\Users\Admin\AppData\Local\Temp\8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Users\Admin\AppData\Local\Temp\8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe
  "C:\Users\Admin\AppData\Local\Temp\8a6291c0691355bc6f2d4d5536920dfdceef7a676279a06c9ca5d7163b9859b0.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1704
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\IWVHP.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2528
  - - 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:244
- - 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:1136
  - - 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:4516
  - - 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:4220

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\IWVHP.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
83c631c9fbdecae66c7dcc993abf3b8b

SHA1
a153f380c15b9f4b2d1c133b2d2de4a183a877c5

SHA256
48405d146a021223f9c8ab96f935eb0ccc52aa38103056cdd72f8165ef4db4ea

SHA512
71f0c52a8e7d029e0090757134a188c193a22bbaa514ce2a9f948de2da5f90263aed9bf9afe09c717c4f2e114ae907f45543167d084b838877885fc272b9c3c6

Download Submit
memory/1136-55-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1136-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1136-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1704-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1704-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1704-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1704-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1704-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1704-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3188-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/3188-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3188-4-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/3188-3-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/3188-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3188-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4220-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4220-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4220-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4220-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4220-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4220-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4516-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads