modiloader | f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
12-12-2024 05:00

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General

Target

f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe
Size

90KB
MD5

08242851a029847bb8adb907e6099e15
SHA1

3c5ae9e36204ae5a3fb71c01a2441ee83e8078d4
SHA256

f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09
SHA512

fb9c7a225cd8a0868029b278636417817c6e3c47e3bc82f26564d4be20b827339a26b8f7455befa316af10274e0aeb8fabba0c495cd0dc695dfedfa20693125e
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 family
modiloader

ModiLoader Second Stage 4 IoCs

resource	yara_rule
behavioral2/memory/1092-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1092-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1092-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1092-62-0x0000000000400000-0x0000000000414000-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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe

Executes dropped EXE 3 IoCs

pid	Process
4324	csrsll.exe
856	csrsll.exe
1092	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-1-5-21-4050598569-1597076380-177084960-1000\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 3288 set thread context of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 4324 set thread context of 856	4324	csrsll.exe	92
PID 4324 set thread context of 1092	4324	csrsll.exe	93

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3288-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3288-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4840-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4840-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4840-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3288-13-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/files/0x0008000000023c88-29.dat	upx
behavioral2/memory/4324-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4840-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4324-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4324-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1092-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1092-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4324-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1092-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1092-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1092-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4840-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/856-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1092-62-0x0000000000400000-0x0000000000414000-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	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe
Token: SeDebugPrivilege	856	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe
4840	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe
4324	csrsll.exe
856	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 3288 wrote to memory of 4840	3288	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	82
PID 4840 wrote to memory of 4532	4840	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	83
PID 4840 wrote to memory of 4532	4840	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	83
PID 4840 wrote to memory of 4532	4840	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	83
PID 4532 wrote to memory of 1068	4532	cmd.exe	86
PID 4532 wrote to memory of 1068	4532	cmd.exe	86
PID 4532 wrote to memory of 1068	4532	cmd.exe	86
PID 4840 wrote to memory of 4324	4840	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	87
PID 4840 wrote to memory of 4324	4840	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	87
PID 4840 wrote to memory of 4324	4840	f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe	87
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 856	4324	csrsll.exe	92
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93
PID 4324 wrote to memory of 1092	4324	csrsll.exe	93

C:\Users\Admin\AppData\Local\Temp\f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe
"C:\Users\Admin\AppData\Local\Temp\f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3288
- C:\Users\Admin\AppData\Local\Temp\f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe
  "C:\Users\Admin\AppData\Local\Temp\f86a80bca73b4c120c24995839c08d32df2f897e32b3af7f127f5f74e0dc7a09.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4840
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FDHCK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4532
  - - 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:1068
- - 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:4324
  - - 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:856
  - - 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:1092

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\FDHCK.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
840bb78d986ac560c63fe2bf9c27168c

SHA1
d9374d67821ac068015bdc8d9fa02e05a6538912

SHA256
03c8fbc33108ab4b803a09349f5620ea6e65919ec51f53eec7147c0b77a7d05f

SHA512
080ff2abe5de24d5677dfc11db1673561319336bf0ca416c86d99fd2e63cd369712a2f6ca786bf47fceaf9e196997bef34464998a43c8449cd9b98578f492a42

Download Submit
memory/856-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1092-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1092-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1092-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1092-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1092-62-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1092-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3288-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3288-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3288-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3288-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/3288-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3288-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/4324-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4324-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4840-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4840-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads