modiloader | 99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0

Analysis

max time kernel
119s
max time network
122s
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 08:06

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General

Target

99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe
Size

90KB
MD5

f4437b8565fefaa0054f1c35b9e2fbe0
SHA1

2f1e54b226ebf185d7b7daf418be368d9b475f84
SHA256

99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0
SHA512

719fa2dedfa062ec7b9a46a951e85a14506dd27901c788f43c3f00faaa6a1f8d8a72a1a3fd571b564aaebf96119bca0a2b2a6b6d022303bbbe8e323ab98adf3a
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDJ:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3r

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/5052-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5052-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5052-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/5052-62-0x0000000000400000-0x0000000000414000-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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe

Executes dropped EXE 3 IoCs

pid	Process
2156	csrsll.exe
4664	csrsll.exe
5052	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-1-5-21-940901362-3608833189-1915618603-1000\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 4960 set thread context of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 2156 set thread context of 4664	2156	csrsll.exe	91
PID 2156 set thread context of 5052	2156	csrsll.exe	92

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4960-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4960-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4872-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4872-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4872-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4960-15-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023ca1-29.dat	upx
behavioral2/memory/4872-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2156-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2156-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5052-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5052-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5052-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5052-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2156-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/5052-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4872-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4664-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/5052-62-0x0000000000400000-0x0000000000414000-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	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.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	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe
Token: SeDebugPrivilege	4664	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe
4872	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe
2156	csrsll.exe
4664	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4960 wrote to memory of 4872	4960	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	84
PID 4872 wrote to memory of 3720	4872	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	85
PID 4872 wrote to memory of 3720	4872	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	85
PID 4872 wrote to memory of 3720	4872	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	85
PID 3720 wrote to memory of 4660	3720	cmd.exe	89
PID 3720 wrote to memory of 4660	3720	cmd.exe	89
PID 3720 wrote to memory of 4660	3720	cmd.exe	89
PID 4872 wrote to memory of 2156	4872	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	90
PID 4872 wrote to memory of 2156	4872	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	90
PID 4872 wrote to memory of 2156	4872	99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe	90
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 4664	2156	csrsll.exe	91
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92
PID 2156 wrote to memory of 5052	2156	csrsll.exe	92

C:\Users\Admin\AppData\Local\Temp\99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe
"C:\Users\Admin\AppData\Local\Temp\99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Users\Admin\AppData\Local\Temp\99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe
  "C:\Users\Admin\AppData\Local\Temp\99792455cd7c5560c8fcb57c62c738c2227f80dbb19be46b793c322c0249e3d0N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4872
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FNBYD.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3720
  - - 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:4660
- - 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:2156
  - - 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:4664
  - - 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:5052

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\FNBYD.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
0fb44cd70e5e884f4f48c7915a9e3813

SHA1
82ddbe5c102c2f385a07e331c6681396e1ca9996

SHA256
58652a9eeb95bfc8b8a5af0672a54246ecafc58c8b59d3fcb33d913d809cb74d

SHA512
b0e51ef830866bbe42bdb9b947559a2cbd22ea749b09e780f05b62976412c9985d8b28a95b08317c4233e0a1a844ac151c827e616c0e0c3c8ac1971c622f28a9

Download Submit
memory/2156-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2156-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2156-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4664-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4872-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/4872-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4872-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4872-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4872-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4872-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4960-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4960-6-0x0000000002B90000-0x0000000002B92000-memory.dmp

Filesize
8KB

Download
memory/4960-3-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4960-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4960-4-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/4960-15-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/5052-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5052-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5052-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5052-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5052-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/5052-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads