modiloader | 33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7

Analysis

max time kernel
119s
max time network
119s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
02-11-2024 15:39

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
Size

112KB
MD5

51d71b5df09edf390436d7bf32c56030
SHA1

529a5500a71e2f597974a0baa392bfc2585e89d6
SHA256

33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7
SHA512

09b4ce988a363879b0214551ed25ef5f1e471a0d1086b3591f1467edba5641ea5f92b2bead15cb2d74eea5e2ada7d3e7e60f39a10c964efecadd24c3be07fb0f
SSDEEP

1536:XixKqfDCsLcQdMKHUgm2zdfBXBKLzPFsm8UUkM:kKq7HB6WhzdZBKLzPWmEF

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 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2452-590-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid	Process
596	csrsll.exe
2292	csrsll.exe
2452	csrsll.exe

Loads dropped DLL 5 IoCs

Processes:

33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe

pid	Process
2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.execsrsll.exe

description	pid	Process	procid_target
PID 2248 set thread context of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 596 set thread context of 2292	596	csrsll.exe	35
PID 596 set thread context of 2452	596	csrsll.exe	36

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2208-277-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2452-582-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2208-585-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2292-587-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2452-590-0x0000000000400000-0x0000000000414000-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:

reg.execsrsll.execsrsll.execsrsll.exe33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.execmd.exe

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	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	Process
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe
Token: SeDebugPrivilege	2292	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.execsrsll.execsrsll.exe

pid	Process
2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
596	csrsll.exe
2292	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

Processes:

33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.execmd.execsrsll.exe

description	pid	Process	procid_target
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2248 wrote to memory of 2208	2248	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	30
PID 2208 wrote to memory of 1944	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	31
PID 2208 wrote to memory of 1944	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	31
PID 2208 wrote to memory of 1944	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	31
PID 2208 wrote to memory of 1944	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	31
PID 1944 wrote to memory of 1464	1944	cmd.exe	33
PID 1944 wrote to memory of 1464	1944	cmd.exe	33
PID 1944 wrote to memory of 1464	1944	cmd.exe	33
PID 1944 wrote to memory of 1464	1944	cmd.exe	33
PID 2208 wrote to memory of 596	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	34
PID 2208 wrote to memory of 596	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	34
PID 2208 wrote to memory of 596	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	34
PID 2208 wrote to memory of 596	2208	33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe	34
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2292	596	csrsll.exe	35
PID 596 wrote to memory of 2452	596	csrsll.exe	36
PID 596 wrote to memory of 2452	596	csrsll.exe	36
PID 596 wrote to memory of 2452	596	csrsll.exe	36
PID 596 wrote to memory of 2452	596	csrsll.exe	36
PID 596 wrote to memory of 2452	596	csrsll.exe	36
PID 596 wrote to memory of 2452	596	csrsll.exe	36
PID 596 wrote to memory of 2452	596	csrsll.exe	36
PID 596 wrote to memory of 2452	596	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
"C:\Users\Admin\AppData\Local\Temp\33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2248
- C:\Users\Admin\AppData\Local\Temp\33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe
  "C:\Users\Admin\AppData\Local\Temp\33ed379a2de172055bff7f06e1ae7306521d5eba424281a90c9398f0690168b7N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2208
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\FFSIW.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1944
  - - 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:1464
- - 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:596
  - - 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:2292
  - - 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:2452

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

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\FFSIW.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
112KB

MD5
3c9d1ce75120d1dfa9654b9d80615fca

SHA1
a6f08d8e34ef1ed0e7cd32988d05626d33d9f3d4

SHA256
cc20d5ab53f245fcc3ffd35e526c73b172e0bf19b9abf7cae522443a4d6e1b3b

SHA512
7deeb0204c6a1e3f5e2c17de7760f0e2c3155023507809f16f52225f31c8ef44575eea962a02e10fee8e472a693ea2c436fa31b16d33f947191d316b79abaee3

Download Submit
memory/2208-277-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2208-585-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2248-2-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2248-107-0x0000000000430000-0x0000000000431000-memory.dmp

Filesize
4KB

Download
memory/2248-145-0x0000000000470000-0x0000000000471000-memory.dmp

Filesize
4KB

Download
memory/2292-587-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2452-582-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2452-590-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download