modiloader | d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163

Analysis

max time kernel
118s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
25-09-2024 20:10

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General

Target

d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe
Size

90KB
MD5

11e15355a241551aa2bc4ffee1b1ac30
SHA1

91c6312f2f40a354ddf328ccb57b4a6fdc61f58c
SHA256

d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163
SHA512

a12eeb698ef481e5bbd6ec476b4658166dfa07ae417d871cbe551bd6333c25cac7fcc8a3f5bdaea3dd99ffbc420c212f0cf47cd50d101f56e610c6570297d173
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/4084-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4084-59-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4084-58-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/4084-64-0x0000000000400000-0x0000000000414000-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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe

Executes dropped EXE 3 IoCs

pid	Process
2308	csrsll.exe
1236	csrsll.exe
4084	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-1-5-21-523280732-2327480845-3730041215-1000\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 2668 set thread context of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2308 set thread context of 1236	2308	csrsll.exe	93
PID 2308 set thread context of 4084	2308	csrsll.exe	94

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2668-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2668-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2360-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2360-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2668-12-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2360-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000800000002341a-29.dat	upx
behavioral2/memory/2308-36-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2360-40-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2308-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2308-42-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4084-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4084-52-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2308-51-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4084-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2360-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4084-59-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4084-58-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1236-63-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4084-64-0x0000000000400000-0x0000000000414000-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	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe
Token: SeDebugPrivilege	1236	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe
2360	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe
2308	csrsll.exe
1236	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2668 wrote to memory of 2360	2668	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	82
PID 2360 wrote to memory of 8	2360	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	83
PID 2360 wrote to memory of 8	2360	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	83
PID 2360 wrote to memory of 8	2360	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	83
PID 8 wrote to memory of 3172	8	cmd.exe	86
PID 8 wrote to memory of 3172	8	cmd.exe	86
PID 8 wrote to memory of 3172	8	cmd.exe	86
PID 2360 wrote to memory of 2308	2360	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	87
PID 2360 wrote to memory of 2308	2360	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	87
PID 2360 wrote to memory of 2308	2360	d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe	87
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 1236	2308	csrsll.exe	93
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94
PID 2308 wrote to memory of 4084	2308	csrsll.exe	94

C:\Users\Admin\AppData\Local\Temp\d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe
"C:\Users\Admin\AppData\Local\Temp\d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Users\Admin\AppData\Local\Temp\d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe
  "C:\Users\Admin\AppData\Local\Temp\d99bf678ea4226fa781728aba05c64b15f262b3e4be9a40667f99283578b6163N.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2360
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\WTUGM.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:8
  - - 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:3172
- - 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:2308
  - - 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:1236
  - - 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:4084

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\WTUGM.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
16bac2eb51a6786948ca5b7f6a931665

SHA1
49b6aae60703a7c456e00c55f7aa92eef3fcb218

SHA256
5747f07b87962c845a6cb363d0b3e45e7fbac6f048658c4d3417db2d4c7171e3

SHA512
d24b45bbc8374f561ccd6f886ee58b5e04ef59f5f0e3ca8ee256601cf50cddb5ef9441107a4c62df1bf14092a8a8c3b54d578297a486b0405de120eef9affd61

Download Submit
memory/1236-63-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2308-51-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2308-42-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2308-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2308-36-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2360-40-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2360-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2360-60-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2360-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2360-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2360-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2668-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2668-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2668-4-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/2668-6-0x0000000002B70000-0x0000000002B72000-memory.dmp

Filesize
8KB

Download
memory/2668-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2668-3-0x0000000002B40000-0x0000000002B42000-memory.dmp

Filesize
8KB

Download
memory/4084-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4084-52-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4084-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4084-59-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4084-58-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4084-64-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads