modiloader | 3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4

Analysis

max time kernel
120s
max time network
116s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
24-11-2024 00:38

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General

Target

3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe
Size

94KB
MD5

fb0dd103eb3d2de5f8dfea694b13938b
SHA1

fbd8954f0f05ee2dcae5751c413fe5ed0924ed07
SHA256

3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4
SHA512

90605d6ed49b0fa22ae8d5b186eb4bcdf5257b1d85ff0b93c4c6b744fb849810dfc59506f4e845036d64c7d68c467c07d01e84998da221cd83bd066765ade8c3
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/d:/pdyLALwACPmV3NYaYLiwIt3raA5BRfe

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/3116-50-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3116-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3116-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3116-59-0x0000000000400000-0x0000000000414000-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

Processes:

3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
5060	csrsll.exe
3392	csrsll.exe
3116	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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.execsrsll.exe

description	pid	Process	procid_target
PID 460 set thread context of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 5060 set thread context of 3392	5060	csrsll.exe	91
PID 5060 set thread context of 3116	5060	csrsll.exe	92

UPX packed file 18 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/460-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3740-5-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3740-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/460-10-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3740-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c7b-27.dat	upx
behavioral2/memory/5060-37-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/5060-38-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3740-47-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3116-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3116-42-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3116-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3116-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3116-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/5060-55-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral2/memory/3740-57-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3392-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3116-59-0x0000000000400000-0x0000000000414000-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

Processes:

3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.execmd.exereg.execsrsll.execsrsll.execsrsll.exe3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.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	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe
Token: SeDebugPrivilege	3392	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.execsrsll.execsrsll.exe

pid	Process
460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe
3740	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe
5060	csrsll.exe
3392	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 460 wrote to memory of 3740	460	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	83
PID 3740 wrote to memory of 4160	3740	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	84
PID 3740 wrote to memory of 4160	3740	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	84
PID 3740 wrote to memory of 4160	3740	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	84
PID 4160 wrote to memory of 2340	4160	cmd.exe	87
PID 4160 wrote to memory of 2340	4160	cmd.exe	87
PID 4160 wrote to memory of 2340	4160	cmd.exe	87
PID 3740 wrote to memory of 5060	3740	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	90
PID 3740 wrote to memory of 5060	3740	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	90
PID 3740 wrote to memory of 5060	3740	3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe	90
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3392	5060	csrsll.exe	91
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92
PID 5060 wrote to memory of 3116	5060	csrsll.exe	92

C:\Users\Admin\AppData\Local\Temp\3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe
"C:\Users\Admin\AppData\Local\Temp\3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:460
- C:\Users\Admin\AppData\Local\Temp\3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe
  "C:\Users\Admin\AppData\Local\Temp\3a2185fff1ea40d2eb980e084a42872a47668cdf18fd50d94a9e46a3bbce72b4.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3740
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WCUYT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4160
  - - 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:2340
- - 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:5060
  - - 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:3392
  - - 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:3116

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\WCUYT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
3b6fe98dd1bea6cef5382cc7fc50e1da

SHA1
f5b13952d2dfdffb7823944916717b0b2484878e

SHA256
3491839ef7823e09922c233614371462218d745842cc9e8d8cfce13e6fae37d7

SHA512
f1a884ce906f6421dbb9d5f96f502301f53fedb61a930f396528298c73ab55abd2c10cacd426a48bfb5d91505930e1a4d48083e4b80d55cab3150306243b9d20

Download Submit
memory/460-3-0x0000000002320000-0x0000000002321000-memory.dmp

Filesize
4KB

Download
memory/460-4-0x0000000002BA0000-0x0000000002BA1000-memory.dmp

Filesize
4KB

Download
memory/460-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/460-10-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/3116-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3116-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3116-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3116-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3116-42-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3116-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3392-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3740-47-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3740-5-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3740-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3740-56-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3740-57-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3740-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/5060-38-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/5060-37-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/5060-55-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download