modiloader | 645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c

General

Target

645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
Size

90KB
MD5

179b61c9ab89ecf23d2f627d03db8b6c
SHA1

df9b07abe75813a228576a0532a513e3fe50341c
SHA256

645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c
SHA512

fb830a79e51dbc7d3d36019d2f16d4c350abc9d779724eb04a068305ad3de664093e41153cd6d15ee130dcfd2b362bbd5ea6add5703fda3b8673a34513ea9bb1
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

Processes:

resource	yara_rule
behavioral2/memory/3148-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3148-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3148-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3148-65-0x0000000000400000-0x0000000000414000-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

Processes:

645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

2736 csrsll.exe
768 csrsll.exe
3148 csrsll.exe

pid	process
2736	csrsll.exe
768	csrsll.exe
3148	csrsll.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.execsrsll.exe

description	pid	process	target process
PID 3456 set thread context of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 2736 set thread context of 768	2736	csrsll.exe	csrsll.exe
PID 2736 set thread context of 3148	2736	csrsll.exe	csrsll.exe

UPX packed file 20 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/3456-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3456-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2976-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2976-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2976-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3456-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/2736-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2976-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2736-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2736-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3148-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3148-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2736-60-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2976-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/768-64-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3148-65-0x0000000000400000-0x0000000000414000-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

Processes:

cmd.exereg.execsrsll.execsrsll.execsrsll.exe645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe

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	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe
Token: SeDebugPrivilege	768	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.execsrsll.execsrsll.exe

pid	process
3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
2976	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
2736	csrsll.exe
768	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.execmd.execsrsll.exe

description	pid	process	target process
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 3456 wrote to memory of 2976	3456	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
PID 2976 wrote to memory of 3040	2976	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	cmd.exe
PID 2976 wrote to memory of 3040	2976	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	cmd.exe
PID 2976 wrote to memory of 3040	2976	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	cmd.exe
PID 3040 wrote to memory of 2196	3040	cmd.exe	reg.exe
PID 3040 wrote to memory of 2196	3040	cmd.exe	reg.exe
PID 3040 wrote to memory of 2196	3040	cmd.exe	reg.exe
PID 2976 wrote to memory of 2736	2976	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	csrsll.exe
PID 2976 wrote to memory of 2736	2976	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	csrsll.exe
PID 2976 wrote to memory of 2736	2976	645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 768	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe
PID 2736 wrote to memory of 3148	2736	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
"C:\Users\Admin\AppData\Local\Temp\645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3456
- C:\Users\Admin\AppData\Local\Temp\645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe
  "C:\Users\Admin\AppData\Local\Temp\645df40d1aeb48d84d6ad49506733aecb385d297681d52c77193e51b1c0dc42c.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2976
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CSTQY.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3040
  - - 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:2196
- - 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:2736
  - - 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:768
  - - 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:3148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CSTQY.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
c1481bf1024593f9443a84841088fad9

SHA1
fafdc95655013f481a80a133b51cdc4d27d2dcdb

SHA256
a77eb2bd44fe97614a3842f0c98b887b20687ae41698dee5052d59981a351610

SHA512
f5c49d595b36231c32169daac024388cceaff256ccc632b8e62916b6523d34cf206ca69fefd5d4cd8ed55b14b8d5a8cdea1bf135d2904097c704191dcdda7418

Download Submit
memory/768-64-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2736-60-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2736-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2976-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2976-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2976-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2976-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2976-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2976-61-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3148-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-65-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3148-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3456-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3456-4-0x0000000002300000-0x0000000002302000-memory.dmp

Filesize
8KB

Download
memory/3456-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/3456-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3456-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/3456-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads