modiloader | c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2

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
19-12-2024 10:29

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General

Target

c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
Size

300KB
MD5

928d1835d34170e2d9a50f00297c35a0
SHA1

40e4a2771cf4daf8402e34cf8e2bec1aaa7b94a1
SHA256

c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2
SHA512

e0a3ba515e624a8e96a29b7b605c8ab1aefb2c074bd43f352746d83231c94113e5e4e185c9811836e5b78c9fa9d7f1ee59ddacfaa16bbbd19f304bb35a26b99a
SSDEEP

3072:Ue2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38G8:UsxD5cwohO+O1sVG0/pZ6iPC8m

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/1164-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1164-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1164-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1164-59-0x0000000000400000-0x0000000000414000-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	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe

Executes dropped EXE 3 IoCs

pid	Process
312	csrsll.exe
1648	csrsll.exe
1164	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 3996 set thread context of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 312 set thread context of 1648	312	csrsll.exe	95
PID 312 set thread context of 1164	312	csrsll.exe	96

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3164-6-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3164-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3164-8-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3164-37-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1164-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1164-43-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1164-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1164-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1164-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3164-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1648-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1164-59-0x0000000000400000-0x0000000000414000-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	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe
Token: SeDebugPrivilege	1648	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
3164	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
312	csrsll.exe
1648	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3996 wrote to memory of 3164	3996	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	84
PID 3164 wrote to memory of 2092	3164	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	87
PID 3164 wrote to memory of 2092	3164	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	87
PID 3164 wrote to memory of 2092	3164	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	87
PID 2092 wrote to memory of 864	2092	cmd.exe	90
PID 2092 wrote to memory of 864	2092	cmd.exe	90
PID 2092 wrote to memory of 864	2092	cmd.exe	90
PID 3164 wrote to memory of 312	3164	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	91
PID 3164 wrote to memory of 312	3164	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	91
PID 3164 wrote to memory of 312	3164	c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe	91
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1648	312	csrsll.exe	95
PID 312 wrote to memory of 1164	312	csrsll.exe	96
PID 312 wrote to memory of 1164	312	csrsll.exe	96
PID 312 wrote to memory of 1164	312	csrsll.exe	96
PID 312 wrote to memory of 1164	312	csrsll.exe	96
PID 312 wrote to memory of 1164	312	csrsll.exe	96
PID 312 wrote to memory of 1164	312	csrsll.exe	96
PID 312 wrote to memory of 1164	312	csrsll.exe	96
PID 312 wrote to memory of 1164	312	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
"C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe
  "C:\Users\Admin\AppData\Local\Temp\c924686f50eb6b87b1c908b751e8824cd945fd374bf5da4917fbc66ac2a066c2.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\BCFRS.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2092
  - - 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:864
- - 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:312
  - - 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:1648
  - - 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:1164

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\BCFRS.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
300KB

MD5
b1ca62461b611755e8b5796eea632cc2

SHA1
5dbf1f099168e0939d34759c06216936bb1fba26

SHA256
66d2b625ba9a50ae2426fb2e8e9b7796aae72fc69c61b635a73961c401b96832

SHA512
f8e90ffc0e73ee1001e31aa6a6653b98d91f3760ceefe16a201ec58f911ab7f1d1efa6ba2763fdf78d8ca1e48ba9b7e84896555cbcc6bec21944fb38f2af8bb0

Download Submit
memory/312-54-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/312-39-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/312-38-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1164-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1164-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1164-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1164-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1164-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1164-43-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1648-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-37-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-8-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-6-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3996-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3996-5-0x0000000002C90000-0x0000000002C92000-memory.dmp

Filesize
8KB

Download
memory/3996-0-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/3996-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads