modiloader | b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08

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
17-12-2024 21:45

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe
Size

90KB
MD5

dc3d9f67cc5b51f0c4d4c8a05bc97290
SHA1

b679ce97156e4864dee423d380dcbd63e0fccacf
SHA256

b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08
SHA512

944ef8ef4821ced540a5b9fecd03bf2e5f9ca40d1b976f4d6e3db1ef1c58d0e366c8ab1ed3b4715293035eaa4585477f6c8664a2a4889d10a71ce4accebe049d
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDB:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3L

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/4852-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4852-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4852-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4852-62-0x0000000000400000-0x0000000000414000-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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe

Executes dropped EXE 3 IoCs

pid	Process
4628	csrsll.exe
3852	csrsll.exe
4852	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-1-5-21-3442511616-637977696-3186306149-1000\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 4524 set thread context of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4628 set thread context of 3852	4628	csrsll.exe	92
PID 4628 set thread context of 4852	4628	csrsll.exe	93

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4524-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4524-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3712-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3712-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3712-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4524-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x000b000000023b84-29.dat	upx
behavioral2/memory/3712-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4628-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4628-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4852-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4852-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4852-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4852-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4852-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4628-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3712-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3852-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4852-62-0x0000000000400000-0x0000000000414000-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	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	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe
Token: SeDebugPrivilege	3852	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe
3712	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe
4628	csrsll.exe
3852	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 4524 wrote to memory of 3712	4524	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	82
PID 3712 wrote to memory of 2428	3712	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	83
PID 3712 wrote to memory of 2428	3712	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	83
PID 3712 wrote to memory of 2428	3712	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	83
PID 2428 wrote to memory of 4052	2428	cmd.exe	86
PID 2428 wrote to memory of 4052	2428	cmd.exe	86
PID 2428 wrote to memory of 4052	2428	cmd.exe	86
PID 3712 wrote to memory of 4628	3712	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	87
PID 3712 wrote to memory of 4628	3712	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	87
PID 3712 wrote to memory of 4628	3712	b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe	87
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 3852	4628	csrsll.exe	92
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93
PID 4628 wrote to memory of 4852	4628	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe
"C:\Users\Admin\AppData\Local\Temp\b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4524
- C:\Users\Admin\AppData\Local\Temp\b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe
  "C:\Users\Admin\AppData\Local\Temp\b28ef1da4334d2a664a3b018ad471ef3be8a2a2512e93172b071eae321b86c08N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3712
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FBPVN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2428
  - - 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:4052
- - 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:4628
  - - 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:3852
  - - 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:4852

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

Loading Replay Monitor...

Downloads

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

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
15495bfa5cc09cc65c72da1f37624887

SHA1
73e5ca4cc5d9f8abecb43a3b0a02cb3865c7324c

SHA256
0835d53d28fedd0b3d2fee9fd933f3091e929892a4bd675e962d168ef7ee7cf2

SHA512
fc7dc41deeb486915539775894752eab2b31e342a4f62e2ad4a1f22913941d40746cbe2c6c302a37d4996ebe026b0f0a8f34d20f1b47d07d436219f38ed71e08

Download Submit
memory/3712-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3712-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3712-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3712-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3712-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3712-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3852-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4524-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4524-6-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/4524-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4524-4-0x00000000022C0000-0x00000000022C2000-memory.dmp

Filesize
8KB

Download
memory/4524-3-0x00000000022B0000-0x00000000022B2000-memory.dmp

Filesize
8KB

Download
memory/4524-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4628-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4628-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4628-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4852-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4852-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4852-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4852-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4852-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4852-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads