modiloader | 049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 19:28

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General

Target

049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe
Size

90KB
MD5

5d98f6ec9f83a91d962aa757b548aa6f
SHA1

fd805b8de79f54e37ef1ad17e74445d361579dc4
SHA256

049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae
SHA512

3b3f7bff70cf690d694238cc8b73d729839544d9ca7a67cc81525ecd8d3ccb8fe4059b67b4d42c9b597a9f86bfd23b309cdec5abccfd92537cb963538f25e9e2
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDT:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3d

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/1488-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1488-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1488-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1488-63-0x0000000000400000-0x0000000000414000-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	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe

Executes dropped EXE 3 IoCs

pid	Process
4944	csrsll.exe
1240	csrsll.exe
1488	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 688 set thread context of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 4944 set thread context of 1240	4944	csrsll.exe	93
PID 4944 set thread context of 1488	4944	csrsll.exe	94

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/688-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/688-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1976-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1976-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/688-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1976-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c95-29.dat	upx
behavioral2/memory/1976-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4944-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4944-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1488-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1488-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1488-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1488-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1488-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4944-56-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1976-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1240-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1488-63-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe
Token: SeDebugPrivilege	1240	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe
1976	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe
4944	csrsll.exe
1240	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 688 wrote to memory of 1976	688	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	82
PID 1976 wrote to memory of 468	1976	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	83
PID 1976 wrote to memory of 468	1976	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	83
PID 1976 wrote to memory of 468	1976	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	83
PID 468 wrote to memory of 1356	468	cmd.exe	86
PID 468 wrote to memory of 1356	468	cmd.exe	86
PID 468 wrote to memory of 1356	468	cmd.exe	86
PID 1976 wrote to memory of 4944	1976	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	87
PID 1976 wrote to memory of 4944	1976	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	87
PID 1976 wrote to memory of 4944	1976	049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe	87
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1240	4944	csrsll.exe	93
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94
PID 4944 wrote to memory of 1488	4944	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe
"C:\Users\Admin\AppData\Local\Temp\049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:688
- C:\Users\Admin\AppData\Local\Temp\049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe
  "C:\Users\Admin\AppData\Local\Temp\049b5eeb78fdf5683039f863f00e170aa2e6beb9c723e76d25fade727e8607ae.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1976
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YMRWD.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:468
  - - 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:1356
- - 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:4944
  - - 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:1240
  - - 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:1488

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\YMRWD.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0f41bf2650e6d55677615414351df854

SHA1
73914c9b31671f61a47c03093cd6683c7630dc26

SHA256
4344b567ade8634690fcfe27e4ff81b5f319490e95e30ac1bf74f4aaa1daf046

SHA512
1e0a336170f1e5349adefb553b0ab52977d32852d91f71ea02bfecb2425d27f468880c812102914e4ea404598a684c7c191b9eb1eda67f950691083a0b214d33

Download Submit
memory/688-6-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/688-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/688-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/688-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/688-4-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/688-3-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/1240-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1488-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1488-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1488-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1488-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1488-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1488-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1976-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1976-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1976-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/1976-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1976-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1976-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4944-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4944-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4944-56-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads