modiloader | 61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035

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
20-12-2024 05:05

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General

Target

61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe
Size

90KB
MD5

97472703edfa4ccefcd6070fa55f46e0
SHA1

1bfad6e321a18c29c5e69260a69ad60b61551719
SHA256

61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035
SHA512

80fbd71eab2646bb175888ac02384a0cb68a235b2c86c31e68aa9640d2d3dc8c45e9fd98c663ef87989f55c8b89dc6132b19f8f8f1d3d66cfbde4782ac59cd76
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 family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/3452-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3452-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3452-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3452-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe

Executes dropped EXE 3 IoCs

pid	Process
2840	csrsll.exe
740	csrsll.exe
3452	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-1-5-21-2045521122-590294423-3465680274-1000\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 2616 set thread context of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2840 set thread context of 740	2840	csrsll.exe	104
PID 2840 set thread context of 3452	2840	csrsll.exe	105

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2616-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2616-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4856-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4856-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4856-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2616-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023cc1-29.dat	upx
behavioral2/memory/2840-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4856-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2840-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2840-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3452-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3452-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3452-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3452-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3452-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2840-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4856-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/740-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3452-61-0x0000000000400000-0x0000000000414000-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	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.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	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe
Token: SeDebugPrivilege	740	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe
4856	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe
2840	csrsll.exe
740	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 2616 wrote to memory of 4856	2616	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	85
PID 4856 wrote to memory of 1004	4856	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	93
PID 4856 wrote to memory of 1004	4856	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	93
PID 4856 wrote to memory of 1004	4856	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	93
PID 1004 wrote to memory of 2012	1004	cmd.exe	97
PID 1004 wrote to memory of 2012	1004	cmd.exe	97
PID 1004 wrote to memory of 2012	1004	cmd.exe	97
PID 4856 wrote to memory of 2840	4856	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	98
PID 4856 wrote to memory of 2840	4856	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	98
PID 4856 wrote to memory of 2840	4856	61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe	98
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 740	2840	csrsll.exe	104
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105
PID 2840 wrote to memory of 3452	2840	csrsll.exe	105

C:\Users\Admin\AppData\Local\Temp\61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe
"C:\Users\Admin\AppData\Local\Temp\61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2616
- C:\Users\Admin\AppData\Local\Temp\61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe
  "C:\Users\Admin\AppData\Local\Temp\61c06fcbc07d0c02d9bf6333cb1ea5553e0d8033f794c26ec5df5d487b9a0035N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4856
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\YCMSK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1004
  - - 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:2012
- - 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:2840
  - - 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:740
  - - 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:3452

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\YCMSK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
27033fc007dde16710df024e53ddc0e6

SHA1
e0792f40fdc78b08c6dd7a422ac09ec02d8e576d

SHA256
cac33be975eb6b9a256d13d6d1a840e8b5123b520f20227c5a80fecdf947fa10

SHA512
d7df135ae4a5833e96b872f113645322468c4e0b34e3ec8c25abae0f9b11d89d81b5ed0209910ddf8e10240fdf753a234e6ccbc37d51c343499cf1e9b4c14ae5

Download Submit
memory/740-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2616-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2616-3-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2616-5-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/2616-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2616-6-0x0000000002CA0000-0x0000000002CA2000-memory.dmp

Filesize
8KB

Download
memory/2616-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2840-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2840-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2840-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2840-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3452-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3452-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3452-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3452-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3452-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3452-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4856-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4856-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4856-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4856-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4856-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads