modiloader | a7bb3aad07da1be1cd106f392818f7efbda57d4e42b68633e50f0bbb3eec8e41

Analysis

max time kernel
119s
max time network
122s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25/08/2024, 22:47

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General

Target

4fe2d9430564e21606412d5aecb69920N.exe
Size

90KB
MD5

4fe2d9430564e21606412d5aecb69920
SHA1

b2393aa8a0e4cc4b294b5cadb6de538f8975f7de
SHA256

a7bb3aad07da1be1cd106f392818f7efbda57d4e42b68633e50f0bbb3eec8e41
SHA512

0d9f6562111fb68b065b7e03f8430e04907cebef0722b80b4eea48ae98a73d18a11f12a22592afc04f19f3bd2cf3817d62c0a7e6a24d229ba1c357106db510c8
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/2020-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2020-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2020-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2020-63-0x0000000000400000-0x0000000000414000-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-1-5-21-4182098368-2521458979-3782681353-1000\Control Panel\International\Geo\Nation	4fe2d9430564e21606412d5aecb69920N.exe

Executes dropped EXE 3 IoCs

pid	Process
3528	csrsll.exe
2000	csrsll.exe
2020	csrsll.exe

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2072-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2072-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3164-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3164-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2072-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3164-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3164-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000a00000002343b-29.dat	upx
behavioral2/memory/3528-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3164-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3528-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3528-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2020-48-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2020-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2020-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3528-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2020-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2020-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3164-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2000-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2020-63-0x0000000000400000-0x0000000000414000-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-1-5-21-4182098368-2521458979-3782681353-1000\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 2072 set thread context of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 3528 set thread context of 2000	3528	csrsll.exe	100
PID 3528 set thread context of 2020	3528	csrsll.exe	101

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	4fe2d9430564e21606412d5aecb69920N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	4fe2d9430564e21606412d5aecb69920N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe
Token: SeDebugPrivilege	2000	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2072	4fe2d9430564e21606412d5aecb69920N.exe
3164	4fe2d9430564e21606412d5aecb69920N.exe
3528	csrsll.exe
2000	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 2072 wrote to memory of 3164	2072	4fe2d9430564e21606412d5aecb69920N.exe	92
PID 3164 wrote to memory of 4500	3164	4fe2d9430564e21606412d5aecb69920N.exe	93
PID 3164 wrote to memory of 4500	3164	4fe2d9430564e21606412d5aecb69920N.exe	93
PID 3164 wrote to memory of 4500	3164	4fe2d9430564e21606412d5aecb69920N.exe	93
PID 4500 wrote to memory of 2224	4500	cmd.exe	97
PID 4500 wrote to memory of 2224	4500	cmd.exe	97
PID 4500 wrote to memory of 2224	4500	cmd.exe	97
PID 3164 wrote to memory of 3528	3164	4fe2d9430564e21606412d5aecb69920N.exe	99
PID 3164 wrote to memory of 3528	3164	4fe2d9430564e21606412d5aecb69920N.exe	99
PID 3164 wrote to memory of 3528	3164	4fe2d9430564e21606412d5aecb69920N.exe	99
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2000	3528	csrsll.exe	100
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101
PID 3528 wrote to memory of 2020	3528	csrsll.exe	101

C:\Users\Admin\AppData\Local\Temp\4fe2d9430564e21606412d5aecb69920N.exe
"C:\Users\Admin\AppData\Local\Temp\4fe2d9430564e21606412d5aecb69920N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2072
- C:\Users\Admin\AppData\Local\Temp\4fe2d9430564e21606412d5aecb69920N.exe
  "C:\Users\Admin\AppData\Local\Temp\4fe2d9430564e21606412d5aecb69920N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3164
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\UYKIM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4500
  - - 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:2224
- - 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:3528
  - - 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:2000
  - - 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:2020

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\UYKIM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
cf81ff07be1b206bc848ea9472a32791

SHA1
fccce597a1dda76a79438934438f26f6e7e43486

SHA256
4099c60242c6c742bdd753b9a3d57ab16e99e5605083fca33c8a9bc4b2ebe810

SHA512
40fb103d4075000589ab6e32fc980bacb1fcf2d4b26ce80132018b2da93e0f4666679bebc1d3de67b811efb7bb81108dd0ec912331ad15d8549b8124eb2b0a61

Download Submit
memory/2000-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2020-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2020-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2020-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2020-48-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2020-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2020-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2072-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2072-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2072-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2072-6-0x0000000002A80000-0x0000000002A82000-memory.dmp

Filesize
8KB

Download
memory/2072-4-0x0000000002A60000-0x0000000002A62000-memory.dmp

Filesize
8KB

Download
memory/2072-3-0x0000000002A50000-0x0000000002A52000-memory.dmp

Filesize
8KB

Download
memory/3164-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-59-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/3164-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3164-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3528-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3528-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3528-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3528-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads