modiloader | f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4ab

Analysis

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

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
20-09-2024 15:14

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General

Target

f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
Size

90KB
MD5

f10c172fd7ac535cba98b9be2b8eeb60
SHA1

4dda7aa971f5c7d597a387b5878e9c57b1020342
SHA256

f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4ab
SHA512

6b05f9c6942a2ba12fdd00ed37665d7819a60c71d79ecbfc4ef2308fd8fdea17c4d31ce0ac8fb2c95c5558c87beac9f46576f1e04fc1454ec7e84250d7c2fe6c
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/2716-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2716-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2716-56-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/2716-61-0x0000000000400000-0x0000000000414000-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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe

Executes dropped EXE 3 IoCs

pid	Process
4988	csrsll.exe
964	csrsll.exe
2716	csrsll.exe

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2268-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2268-4-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2052-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2052-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2268-10-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2052-12-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000800000002342d-28.dat	upx
behavioral2/memory/4988-35-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2052-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4988-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/4988-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2716-46-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2716-56-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4988-57-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/2052-59-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/964-60-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/2716-61-0x0000000000400000-0x0000000000414000-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-1-5-21-355097885-2402257403-2971294179-1000\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 2268 set thread context of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 4988 set thread context of 964	4988	csrsll.exe	95
PID 4988 set thread context of 2716	4988	csrsll.exe	96

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	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.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	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe
Token: SeDebugPrivilege	964	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
2052	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
4988	csrsll.exe
964	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2268 wrote to memory of 2052	2268	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	86
PID 2052 wrote to memory of 4484	2052	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	88
PID 2052 wrote to memory of 4484	2052	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	88
PID 2052 wrote to memory of 4484	2052	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	88
PID 4484 wrote to memory of 4800	4484	cmd.exe	91
PID 4484 wrote to memory of 4800	4484	cmd.exe	91
PID 4484 wrote to memory of 4800	4484	cmd.exe	91
PID 2052 wrote to memory of 4988	2052	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	92
PID 2052 wrote to memory of 4988	2052	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	92
PID 2052 wrote to memory of 4988	2052	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	92
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 964	4988	csrsll.exe	95
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96
PID 4988 wrote to memory of 2716	4988	csrsll.exe	96

C:\Users\Admin\AppData\Local\Temp\f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
"C:\Users\Admin\AppData\Local\Temp\f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2268
- C:\Users\Admin\AppData\Local\Temp\f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
  "C:\Users\Admin\AppData\Local\Temp\f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2052
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\OPMUG.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4484
  - - 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:4800
- - 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:4988
  - - 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:964
  - - 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:2716

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\OPMUG.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
bdc79098b1de94e7a0e1ca8f30072d5a

SHA1
b259ebfefb445b3452810b9f568d9f0a9cc9c2ef

SHA256
f5dce7b8fd3faad96c79bfd240a8911a83e670b2f48ea3bc33fa361abbce80b7

SHA512
1045499da971e2b75b0190629c5d3aed0fe41bfb93da221e3ed2d73c086b0bb1dfec78a52428659db5e2c56b215e54e6e8523d7942fd85ab84ab1d6b41b6d33e

Download Submit
memory/964-60-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2052-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2052-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2052-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2052-12-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2052-59-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2052-58-0x0000000000410000-0x00000000004D9000-memory.dmp

Filesize
804KB

Download
memory/2268-5-0x0000000002310000-0x0000000002312000-memory.dmp

Filesize
8KB

Download
memory/2268-10-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2268-6-0x0000000002320000-0x0000000002322000-memory.dmp

Filesize
8KB

Download
memory/2268-4-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2268-3-0x00000000022F0000-0x00000000022F2000-memory.dmp

Filesize
8KB

Download
memory/2268-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2716-56-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-46-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2716-61-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/4988-57-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4988-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4988-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/4988-35-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads