modiloader | cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401

Analysis

max time kernel
118s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
21-09-2024 04:56

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General

Target

cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe
Size

90KB
MD5

b8ed67c030e89a509ce49d3ebd653c60
SHA1

28470d83a8df61851a1f5fbb7a94bcd7850b5c83
SHA256

cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401
SHA512

fbdba2835926ec9b128dd9857310db03f5fb0ff4c4558eeed1d8ce03d3c189700777fb39437a1bcd34765ce028d6984b37d00b827062a1c8bd11801ecf1d9db4
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 Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/4912-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4912-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4912-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4912-61-0x0000000000400000-0x0000000000414000-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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe

Executes dropped EXE 3 IoCs

pid	Process
516	csrsll.exe
2472	csrsll.exe
4912	csrsll.exe

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3980-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3980-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1284-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1284-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1284-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3980-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023489-28.dat	upx
behavioral2/memory/1284-38-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/516-39-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/516-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4912-44-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4912-49-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/516-54-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4912-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4912-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4912-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1284-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2472-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4912-61-0x0000000000400000-0x0000000000414000-memory.dmp	upx

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-1-5-21-2718105630-359604950-2820636825-1000\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 3980 set thread context of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 516 set thread context of 2472	516	csrsll.exe	95
PID 516 set thread context of 4912	516	csrsll.exe	96

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	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.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	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe
Token: SeDebugPrivilege	2472	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe
1284	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe
516	csrsll.exe
2472	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 3980 wrote to memory of 1284	3980	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	87
PID 1284 wrote to memory of 4136	1284	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	88
PID 1284 wrote to memory of 4136	1284	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	88
PID 1284 wrote to memory of 4136	1284	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	88
PID 4136 wrote to memory of 3572	4136	cmd.exe	91
PID 4136 wrote to memory of 3572	4136	cmd.exe	91
PID 4136 wrote to memory of 3572	4136	cmd.exe	91
PID 1284 wrote to memory of 516	1284	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	92
PID 1284 wrote to memory of 516	1284	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	92
PID 1284 wrote to memory of 516	1284	cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe	92
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 2472	516	csrsll.exe	95
PID 516 wrote to memory of 4912	516	csrsll.exe	96
PID 516 wrote to memory of 4912	516	csrsll.exe	96
PID 516 wrote to memory of 4912	516	csrsll.exe	96
PID 516 wrote to memory of 4912	516	csrsll.exe	96
PID 516 wrote to memory of 4912	516	csrsll.exe	96
PID 516 wrote to memory of 4912	516	csrsll.exe	96
PID 516 wrote to memory of 4912	516	csrsll.exe	96
PID 516 wrote to memory of 4912	516	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe
"C:\Users\Admin\AppData\Local\Temp\cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Users\Admin\AppData\Local\Temp\cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe
  "C:\Users\Admin\AppData\Local\Temp\cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1284
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\NBMUM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4136
  - - 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:3572
- - 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:516
  - - 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:2472
  - - 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:4912

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

Replay Monitor

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Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
b8ed67c030e89a509ce49d3ebd653c60

SHA1
28470d83a8df61851a1f5fbb7a94bcd7850b5c83

SHA256
cae128f18165d9869cf1e68f494f91ef33869b0fb1e8019164d06e2d18f96401

SHA512
fbdba2835926ec9b128dd9857310db03f5fb0ff4c4558eeed1d8ce03d3c189700777fb39437a1bcd34765ce028d6984b37d00b827062a1c8bd11801ecf1d9db4

Download Submit
memory/516-54-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/516-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/516-39-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1284-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1284-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1284-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1284-38-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1284-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2472-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3980-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3980-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3980-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/3980-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3980-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/3980-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/4912-44-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4912-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4912-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4912-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4912-49-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4912-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads