modiloader | b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285

Analysis

max time kernel
119s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
26-12-2024 15:41

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General

Target

b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
Size

90KB
MD5

8c36aff793b2bf370ff042ee9b3967f0
SHA1

e5084dbb15025d22f8bc8e543c2e8507850ef8bf
SHA256

b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285
SHA512

a6f82f55fa58e2c478e64970a60147ee53bb80afbe3ba08b9326723d16530f2ee7a9e351bdd7f54bc48d6f3d932df337c425ef1275f4d33c57e5d9aafa96584d
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDp:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3H

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 1 IoCs

resource	yara_rule
behavioral1/memory/560-257-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
936	csrsll.exe
920	csrsll.exe
560	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.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-1-5-21-1488793075-819845221-1497111674-1000\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 1448 set thread context of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 936 set thread context of 920	936	csrsll.exe	35
PID 936 set thread context of 560	936	csrsll.exe	36

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1448-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1448-92-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1448-87-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2064-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1448-103-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2064-97-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2064-95-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1448-82-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1448-79-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1448-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2064-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2064-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2064-106-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x0006000000010300-132.dat	upx
behavioral1/memory/2064-146-0x00000000025A0000-0x00000000025F3000-memory.dmp	upx
behavioral1/memory/2064-150-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/936-216-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/560-245-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/936-247-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2064-251-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/920-254-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/560-257-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.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

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe
Token: SeDebugPrivilege	920	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
936	csrsll.exe
920	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 1448 wrote to memory of 2064	1448	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	30
PID 2064 wrote to memory of 2912	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	31
PID 2064 wrote to memory of 2912	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	31
PID 2064 wrote to memory of 2912	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	31
PID 2064 wrote to memory of 2912	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	31
PID 2912 wrote to memory of 1316	2912	cmd.exe	33
PID 2912 wrote to memory of 1316	2912	cmd.exe	33
PID 2912 wrote to memory of 1316	2912	cmd.exe	33
PID 2912 wrote to memory of 1316	2912	cmd.exe	33
PID 2064 wrote to memory of 936	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	34
PID 2064 wrote to memory of 936	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	34
PID 2064 wrote to memory of 936	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	34
PID 2064 wrote to memory of 936	2064	b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe	34
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 920	936	csrsll.exe	35
PID 936 wrote to memory of 560	936	csrsll.exe	36
PID 936 wrote to memory of 560	936	csrsll.exe	36
PID 936 wrote to memory of 560	936	csrsll.exe	36
PID 936 wrote to memory of 560	936	csrsll.exe	36
PID 936 wrote to memory of 560	936	csrsll.exe	36
PID 936 wrote to memory of 560	936	csrsll.exe	36
PID 936 wrote to memory of 560	936	csrsll.exe	36
PID 936 wrote to memory of 560	936	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
"C:\Users\Admin\AppData\Local\Temp\b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\Temp\b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe
  "C:\Users\Admin\AppData\Local\Temp\b5b0e5ec32315259c0002609a21bf3ee5f48ecf6c843508993f0a935a61ff285N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2064
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\KBVWK.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2912
  - - 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:1316
- - 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:936
  - - 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:920
  - - 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:560

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\KBVWK.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
30579053d1565bfc1143498e59d23bc2

SHA1
2ee34f417580e07b42b95375ab42d4d4c99fdbfb

SHA256
3078ef31c8a507104563b1b744f311b43494c757cff59567c1f529b996aeff8e

SHA512
8862c202d50f9d2c342e8f000381575ff399f123d4b82121ff1a06cdbacff3b103ac4bdce18f29ce05b29806ce267e620a4640d69ccdcc7ac8a55a6b0e372740

Download Submit
memory/560-257-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/560-245-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/920-254-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/936-247-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/936-174-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/936-216-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/936-163-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/936-153-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1448-82-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1448-41-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/1448-103-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1448-80-0x00000000004D0000-0x00000000004D2000-memory.dmp

Filesize
8KB

Download
memory/1448-79-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1448-71-0x00000000004B0000-0x00000000004B1000-memory.dmp

Filesize
4KB

Download
memory/1448-61-0x0000000000490000-0x0000000000491000-memory.dmp

Filesize
4KB

Download
memory/1448-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1448-29-0x00000000003D0000-0x00000000003D1000-memory.dmp

Filesize
4KB

Download
memory/1448-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1448-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1448-87-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1448-92-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1448-5-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/1448-15-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/1448-3-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/2064-97-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-150-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-146-0x00000000025A0000-0x00000000025F3000-memory.dmp

Filesize
332KB

Download
memory/2064-106-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-210-0x00000000025A0000-0x00000000025F3000-memory.dmp

Filesize
332KB

Download
memory/2064-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-95-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-251-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2064-99-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2064-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads