modiloader | f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4ab

Analysis

max time kernel
119s
max time network
19s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-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 2 IoCs

resource	yara_rule
behavioral1/memory/1556-251-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral1/memory/1556-260-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1256	csrsll.exe
544	csrsll.exe
1556	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2400-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2400-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2612-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2612-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2400-104-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2612-102-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2612-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2612-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2612-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2400-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/files/0x0034000000011c23-130.dat	upx
behavioral1/memory/2612-132-0x0000000003440000-0x0000000003493000-memory.dmp	upx
behavioral1/memory/1256-148-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2612-151-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1256-212-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1556-251-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1256-250-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1256-253-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2612-256-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/544-239-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/544-257-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1556-260-0x0000000000400000-0x0000000000414000-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-1-5-21-3533259084-2542256011-65585152-1000\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 2400 set thread context of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 1256 set thread context of 544	1256	csrsll.exe	35
PID 1256 set thread context of 1556	1256	csrsll.exe	36

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	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe
Token: SeDebugPrivilege	544	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
1256	csrsll.exe
544	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2400 wrote to memory of 2612	2400	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	30
PID 2612 wrote to memory of 1820	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	31
PID 2612 wrote to memory of 1820	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	31
PID 2612 wrote to memory of 1820	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	31
PID 2612 wrote to memory of 1820	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	31
PID 1820 wrote to memory of 2052	1820	cmd.exe	33
PID 1820 wrote to memory of 2052	1820	cmd.exe	33
PID 1820 wrote to memory of 2052	1820	cmd.exe	33
PID 1820 wrote to memory of 2052	1820	cmd.exe	33
PID 2612 wrote to memory of 1256	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	34
PID 2612 wrote to memory of 1256	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	34
PID 2612 wrote to memory of 1256	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	34
PID 2612 wrote to memory of 1256	2612	f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe	34
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 544	1256	csrsll.exe	35
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36
PID 1256 wrote to memory of 1556	1256	csrsll.exe	36

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:2400
- C:\Users\Admin\AppData\Local\Temp\f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe
  "C:\Users\Admin\AppData\Local\Temp\f660f3b79b3b00ccf7c4fd776b56dfdd292377d5a344383ea7dc93a21dacb4abN.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\CWUSX.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1820
  - - 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:2052
- - 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:1256
  - - 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:544
  - - 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:1556

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

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\CWUSX.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
af3f223639c5795b8ff8a4fa4ab6bd0e

SHA1
af0887442559caff9d5f03e3f24970c387431f3c

SHA256
79b7e524fe816c31b2c288992debdc0d1d3da57d7a2c81e81d06bc87a95c4df5

SHA512
014f4274647ceda682e576cedf2cb3578b6fa4beb37f92960126684ca88c4ad960108c40d25c99299106e60829ae2c402a6d0abd9added9c5d6efd315e4ce46a

Download Submit
memory/544-257-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/544-239-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1256-164-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1256-250-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1256-175-0x0000000000300000-0x0000000000301000-memory.dmp

Filesize
4KB

Download
memory/1256-212-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1256-253-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1256-154-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1256-148-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1556-251-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1556-260-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2400-104-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2400-29-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2400-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2400-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2400-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2400-79-0x00000000003B0000-0x00000000003B2000-memory.dmp

Filesize
8KB

Download
memory/2400-71-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/2400-61-0x0000000000370000-0x0000000000371000-memory.dmp

Filesize
4KB

Download
memory/2400-17-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2400-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2400-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2400-41-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/2400-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2612-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-146-0x0000000003450000-0x00000000034A3000-memory.dmp

Filesize
332KB

Download
memory/2612-102-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-209-0x0000000003440000-0x0000000003493000-memory.dmp

Filesize
332KB

Download
memory/2612-151-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-132-0x0000000003440000-0x0000000003493000-memory.dmp

Filesize
332KB

Download
memory/2612-256-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-145-0x0000000003440000-0x0000000003493000-memory.dmp

Filesize
332KB

Download
memory/2612-96-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2612-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2612-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads