modiloader | 58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9

Analysis

max time kernel
119s
max time network
118s
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 08:45

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General

Target

58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe
Size

90KB
MD5

724649989b50df5b669e554b94dd68e0
SHA1

74b27becf22d2eca3fbb6bffe0b939ff577c2134
SHA256

58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9
SHA512

604d7feb06c6b741cd0041fbd3a4d786ed6960a7a7878a46a744af1db5301aa0e8960061e74614f0071f5da7203a4b068e995793f64cb1c6649e0c342db84b73
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDA:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3W

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/1112-52-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1112-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1112-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1112-62-0x0000000000400000-0x0000000000414000-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	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe

Executes dropped EXE 3 IoCs

pid	Process
1092	csrsll.exe
752	csrsll.exe
1112	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 4708 set thread context of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 1092 set thread context of 752	1092	csrsll.exe	101
PID 1092 set thread context of 1112	1092	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4708-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4708-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2068-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2068-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4708-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2068-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023cb3-29.dat	upx
behavioral2/memory/2068-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1092-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1092-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1112-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1112-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1112-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1112-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1112-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1092-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2068-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/752-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1112-62-0x0000000000400000-0x0000000000414000-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	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	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe
Token: SeDebugPrivilege	752	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe
2068	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe
1092	csrsll.exe
752	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 4708 wrote to memory of 2068	4708	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	83
PID 2068 wrote to memory of 1792	2068	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	88
PID 2068 wrote to memory of 1792	2068	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	88
PID 2068 wrote to memory of 1792	2068	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	88
PID 1792 wrote to memory of 3228	1792	cmd.exe	92
PID 1792 wrote to memory of 3228	1792	cmd.exe	92
PID 1792 wrote to memory of 3228	1792	cmd.exe	92
PID 2068 wrote to memory of 1092	2068	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	93
PID 2068 wrote to memory of 1092	2068	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	93
PID 2068 wrote to memory of 1092	2068	58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe	93
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 752	1092	csrsll.exe	101
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102
PID 1092 wrote to memory of 1112	1092	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe
"C:\Users\Admin\AppData\Local\Temp\58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4708
- C:\Users\Admin\AppData\Local\Temp\58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe
  "C:\Users\Admin\AppData\Local\Temp\58a75ae2fdfab791ed2b0f1bc8e5dd833e0365027d630d78283abbcae037cef9N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2068
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\CTKIT.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1792
  - - 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:3228
- - 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:1092
  - - 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:752
  - - 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:1112

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\CTKIT.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
de549684fe65256bbe25c59f3f93aaf5

SHA1
9e3701f1af6eb4245d9e168f5a46a816b19a711f

SHA256
3abbd7507664502af9b2c5d448d274d699aedd199bb4c2e1af295e62349c035f

SHA512
ef1b2994a71bb057cc47b0af84e748b9fc018462613a6348fa692e2ac0999b0cd6489136cf80afc6c6ed0dbb8d5b119e65f7ec38a530e68735d5c240aae28103

Download Submit
memory/752-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1092-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1092-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1092-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1112-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1112-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1112-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1112-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1112-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1112-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2068-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2068-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2068-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2068-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2068-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2068-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4708-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/4708-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4708-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4708-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4708-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/4708-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads