modiloader | 7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599

Analysis

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

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26/11/2024, 15:10

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General

Target

7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
Size

90KB
MD5

d5bbf30bc1460eac44b2fb33cc317070
SHA1

ff7bb21e87fc7ad975a83c0372ff3c8ce4b6ca92
SHA256

7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599
SHA512

68079a5c7da8b2345ea6316c66a937d88211e65bb7aea14091f8afb12948d17a23f4cfe3a8dc4ef97b6ac3822430c2847c9c8cab85e90ccc37e94fe1434525b7
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 2 IoCs

resource	yara_rule
behavioral1/memory/1396-252-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral1/memory/1396-259-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
2352	csrsll.exe
960	csrsll.exe
1396	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.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-1-5-21-3533259084-2542256011-65585152-1000\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 2888 set thread context of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2352 set thread context of 960	2352	csrsll.exe	36
PID 2352 set thread context of 1396	2352	csrsll.exe	37

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2888-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2888-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2888-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2888-96-0x0000000002760000-0x00000000027B3000-memory.dmp	upx
behavioral1/memory/2708-99-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2708-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2708-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2708-106-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2888-105-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2708-103-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2708-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x0005000000004ed7-131.dat	upx
behavioral1/memory/2708-137-0x00000000034A0000-0x00000000034F3000-memory.dmp	upx
behavioral1/memory/2352-151-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2708-152-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2352-230-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1396-252-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2708-257-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2352-254-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/960-251-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/960-258-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1396-259-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe
Token: SeDebugPrivilege	960	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
2352	csrsll.exe
960	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2888 wrote to memory of 2708	2888	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	31
PID 2708 wrote to memory of 1968	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	32
PID 2708 wrote to memory of 1968	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	32
PID 2708 wrote to memory of 1968	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	32
PID 2708 wrote to memory of 1968	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	32
PID 1968 wrote to memory of 2076	1968	cmd.exe	34
PID 1968 wrote to memory of 2076	1968	cmd.exe	34
PID 1968 wrote to memory of 2076	1968	cmd.exe	34
PID 1968 wrote to memory of 2076	1968	cmd.exe	34
PID 2708 wrote to memory of 2352	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	35
PID 2708 wrote to memory of 2352	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	35
PID 2708 wrote to memory of 2352	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	35
PID 2708 wrote to memory of 2352	2708	7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe	35
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 960	2352	csrsll.exe	36
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37
PID 2352 wrote to memory of 1396	2352	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
"C:\Users\Admin\AppData\Local\Temp\7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe
  "C:\Users\Admin\AppData\Local\Temp\7e21b79760b7d774fae5557f1bf6e2365dfc3d1d77002cf02b452059ca314599N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2708
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\PBDFR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1968
  - - 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:2076
- - 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:2352
  - - 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:960
  - - 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:1396

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\PBDFR.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
34759f908a42e8050c62d4dff829c93e

SHA1
59a6e47c52bce5382624d64fbe51b2ae08521b23

SHA256
d866a1807bce472853e9a1a551d9c524a1834d7849d6cee24dd107f44d79f60d

SHA512
35e490db5b48e74dbc612cc40dd6b49c6c34dca2f99163e15bb34307152089f6f5c961e7d81efdbdbb853251c578d4d1ee22d93ca4797e1e53b8cd529c6f3894

Download Submit
memory/960-258-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/960-251-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1396-259-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1396-252-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2352-254-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2352-230-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2352-165-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2352-176-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2352-155-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2352-151-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2708-103-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-250-0x00000000034A0000-0x00000000034F3000-memory.dmp

Filesize
332KB

Download
memory/2708-97-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2708-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-106-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-150-0x00000000034A0000-0x00000000034F3000-memory.dmp

Filesize
332KB

Download
memory/2708-99-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-257-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2708-217-0x00000000034A0000-0x00000000034F3000-memory.dmp

Filesize
332KB

Download
memory/2708-146-0x00000000034A0000-0x00000000034F3000-memory.dmp

Filesize
332KB

Download
memory/2708-137-0x00000000034A0000-0x00000000034F3000-memory.dmp

Filesize
332KB

Download
memory/2708-152-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2888-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-29-0x0000000000600000-0x0000000000601000-memory.dmp

Filesize
4KB

Download
memory/2888-41-0x0000000000620000-0x0000000000621000-memory.dmp

Filesize
4KB

Download
memory/2888-79-0x0000000000850000-0x0000000000852000-memory.dmp

Filesize
8KB

Download
memory/2888-61-0x00000000006E0000-0x00000000006E1000-memory.dmp

Filesize
4KB

Download
memory/2888-71-0x0000000000700000-0x0000000000701000-memory.dmp

Filesize
4KB

Download
memory/2888-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-96-0x0000000002760000-0x00000000027B3000-memory.dmp

Filesize
332KB

Download
memory/2888-19-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2888-15-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2888-105-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2888-3-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download
memory/2888-5-0x00000000003C0000-0x00000000003C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads