modiloader | fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c

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
22-12-2024 16:57

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General

Target

fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe
Size

90KB
MD5

52445e91fbeaa287159bd7acb70a7383
SHA1

f037baba59b02ca74a7b98227f0ee434ee7f608f
SHA256

fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c
SHA512

57c91d1fac2784273e7fe31c1b804fd4e9f7e90f5dfca8b35ef2875cbc5044d8d04d2146a49695e0c17d33f0ac1c480bc5645490724cbad3510707545b9275a4
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDb:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Z

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/2688-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2688-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2688-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2688-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe

Executes dropped EXE 3 IoCs

pid	Process
1092	csrsll.exe
3844	csrsll.exe
2688	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-1-5-21-3442511616-637977696-3186306149-1000\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 4264 set thread context of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 1092 set thread context of 3844	1092	csrsll.exe	88
PID 1092 set thread context of 2688	1092	csrsll.exe	89

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4264-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4264-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2872-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2872-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2872-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4264-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b96-29.dat	upx
behavioral2/memory/2872-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1092-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1092-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2688-47-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2688-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2688-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2688-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2688-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1092-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2872-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3844-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2688-62-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe
Token: SeDebugPrivilege	3844	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe
2872	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe
1092	csrsll.exe
3844	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 4264 wrote to memory of 2872	4264	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	82
PID 2872 wrote to memory of 1148	2872	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	83
PID 2872 wrote to memory of 1148	2872	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	83
PID 2872 wrote to memory of 1148	2872	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	83
PID 1148 wrote to memory of 2376	1148	cmd.exe	86
PID 1148 wrote to memory of 2376	1148	cmd.exe	86
PID 1148 wrote to memory of 2376	1148	cmd.exe	86
PID 2872 wrote to memory of 1092	2872	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	87
PID 2872 wrote to memory of 1092	2872	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	87
PID 2872 wrote to memory of 1092	2872	fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe	87
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 3844	1092	csrsll.exe	88
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89
PID 1092 wrote to memory of 2688	1092	csrsll.exe	89

C:\Users\Admin\AppData\Local\Temp\fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe
"C:\Users\Admin\AppData\Local\Temp\fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4264
- C:\Users\Admin\AppData\Local\Temp\fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe
  "C:\Users\Admin\AppData\Local\Temp\fec84a4604ece32c5144c0005a5955a7ef2d8e88a85c6603b03ed7cab2f83f8c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2872
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VCDAI.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1148
  - - 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:2376
- - 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:1092
  - - 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:3844
  - - 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:2688

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\VCDAI.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
5bdff8f0450ebed4772c14bedac7786a

SHA1
ec9fa6a288fe7c700308383bb5307be67cbf8641

SHA256
f055b28db284bdfa4be8e310d42c0df9353a34a6b29a65fcaeb8f9de4b9ed368

SHA512
c9b6f607577d3b039f24d41c6df0c151fab9d0b6644b5b611267c4766a6ea76055e99523c6311da2725cc1c36d31e9c3f72c7169b98acbdd221e71f850901de1

Download Submit
memory/1092-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1092-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1092-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2688-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2688-47-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2872-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2872-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2872-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2872-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2872-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3844-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4264-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/4264-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/4264-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4264-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4264-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4264-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads