modiloader | b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2024 16:36

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General

Target

b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
Size

90KB
MD5

845b73f97078eddbdc8e3a73d0def301
SHA1

003de6eb521f005c59323de33372ae0f695f8ca2
SHA256

b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6
SHA512

96ebebfd8d6dba585174b87994f5ab042cdb5d00a61a1f3f2b9f4f112fde3b079253c7be90bb69639c0e08962bfe972c5d3998c8a76923b164cd66de65efc241
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oD9:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE33

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/3168-60-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3168-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3168-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/3168-65-0x0000000000400000-0x0000000000414000-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe

Executes dropped EXE 3 IoCs

pid	Process
1820	csrsll.exe
4508	csrsll.exe
3168	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-1-5-21-4089630652-1596403869-279772308-1000\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 3532 set thread context of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 1820 set thread context of 4508	1820	csrsll.exe	95
PID 1820 set thread context of 3168	1820	csrsll.exe	96

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3532-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3532-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3880-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3880-11-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3532-14-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3880-15-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x0008000000023c72-31.dat	upx
behavioral2/memory/3880-41-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1820-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1820-43-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3168-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3168-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1820-52-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3168-60-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3168-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3168-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3880-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4508-64-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3168-65-0x0000000000400000-0x0000000000414000-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	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.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	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe
Token: SeDebugPrivilege	4508	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
3880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
1820	csrsll.exe
4508	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3532 wrote to memory of 3880	3532	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	84
PID 3880 wrote to memory of 432	3880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	85
PID 3880 wrote to memory of 432	3880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	85
PID 3880 wrote to memory of 432	3880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	85
PID 432 wrote to memory of 1644	432	cmd.exe	88
PID 432 wrote to memory of 1644	432	cmd.exe	88
PID 432 wrote to memory of 1644	432	cmd.exe	88
PID 3880 wrote to memory of 1820	3880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	89
PID 3880 wrote to memory of 1820	3880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	89
PID 3880 wrote to memory of 1820	3880	b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe	89
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 4508	1820	csrsll.exe	95
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96
PID 1820 wrote to memory of 3168	1820	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
"C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3532
- C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe
  "C:\Users\Admin\AppData\Local\Temp\b8a15fb147e3b48f2f998009ef7a21c7382e28eeb45e5da04952b3fed3a519f6.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3880
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\DEPVM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:432
  - - 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:1644
- - 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:1820
  - - 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:4508
  - - 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:3168

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\DEPVM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
269c4c5912d3331c2381dcc522980405

SHA1
0cc8a7788257e1d70af803d4d7dede5c9ef181e1

SHA256
ba9760a5e8e3cd680a662fda2f7332cf7d4832f451d51f2eca4062ad31b869c3

SHA512
5c20ec8bc9fc899258456f8fd0e9fdf5d460b93b686b8a972e108ac7cf483538ad252796833a431873947a84b57aaa1acc550d19e74df25127547605af76e94f

Download Submit
memory/1820-52-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1820-43-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1820-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3168-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3168-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3168-60-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3168-65-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3168-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3168-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/3532-4-0x0000000002910000-0x0000000002912000-memory.dmp

Filesize
8KB

Download
memory/3532-14-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3532-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3532-7-0x0000000002930000-0x0000000002932000-memory.dmp

Filesize
8KB

Download
memory/3532-6-0x0000000002920000-0x0000000002922000-memory.dmp

Filesize
8KB

Download
memory/3532-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3532-3-0x0000000002900000-0x0000000002902000-memory.dmp

Filesize
8KB

Download
memory/3880-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3880-41-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3880-15-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3880-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3880-11-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4508-64-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads