modiloader | c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
14-01-2025 08:13

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General

Target

c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
Size

94KB
MD5

544adb37fe11967819464c84268fc64d
SHA1

744bd4d885f8d46ef567502a43e54b498fe1d136
SHA256

c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a
SHA512

25e302bb33159d3fdaa513fae76271c7917c65cf6fb8072e0f79a5335a1d15e74ed63ecc010364971d8122aa19e4032986e7c4cc1bb3561c532894a0e37c73cd
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/K:/pdyLALwACPmV3NYaYLiwIt3raA5BRf/

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/111144-147862-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
28016	csrsll.exe
3936	csrsll.exe
111144	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.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-1-5-21-1846800975-3917212583-2893086201-1000\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 2912 set thread context of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 28016 set thread context of 3936	28016	csrsll.exe	35
PID 28016 set thread context of 111144	28016	csrsll.exe	36

UPX packed file 18 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2912-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/2912-125-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/2912-57230-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/2912-73928-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/27704-73932-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/27704-73926-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/27704-73924-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/27704-73921-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/27704-73919-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/27704-73925-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x000a000000015d6e-73955.dat	upx
behavioral1/memory/27704-73969-0x00000000026A0000-0x00000000026F6000-memory.dmp	upx
behavioral1/memory/27704-125542-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/111144-147846-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/28016-147851-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/27704-147858-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/3936-147859-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/111144-147862-0x0000000000400000-0x0000000000414000-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	csrsll.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe
Token: SeDebugPrivilege	3936	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
28016	csrsll.exe
3936	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 2912 wrote to memory of 27704	2912	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	29
PID 27704 wrote to memory of 27940	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	31
PID 27704 wrote to memory of 27940	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	31
PID 27704 wrote to memory of 27940	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	31
PID 27704 wrote to memory of 27940	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	31
PID 27940 wrote to memory of 27992	27940	cmd.exe	33
PID 27940 wrote to memory of 27992	27940	cmd.exe	33
PID 27940 wrote to memory of 27992	27940	cmd.exe	33
PID 27940 wrote to memory of 27992	27940	cmd.exe	33
PID 27704 wrote to memory of 28016	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	34
PID 27704 wrote to memory of 28016	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	34
PID 27704 wrote to memory of 28016	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	34
PID 27704 wrote to memory of 28016	27704	c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe	34
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 3936	28016	csrsll.exe	35
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36
PID 28016 wrote to memory of 111144	28016	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
"C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2912
- C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe
  "C:\Users\Admin\AppData\Local\Temp\c1d4fef13c94035fca09703ab2b06a9e0dc2af117d4fdf02073294f02b78835a.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:27704
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\BMRNB.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:27940
  - - 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:27992
- - 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:28016
  - - 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:3936
  - - 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:111144

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\BMRNB.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
919cf8d5096519aabe348c901d2de0aa

SHA1
950a8fb2674d88d12238a1e008c8a452cb9265f7

SHA256
ae51beacf9ee18ccdbf709f8b20273ee92d5131ae52516f2981ffb224a596695

SHA512
f58dc94c3aa75897862daa625db096cf970dd014922fdef3c6bbb4bd40eadc56d3047fc14f8d497b687b7322269268984cfcb0b3876a65f1005d88ebe239ce3d

Download Submit
memory/2912-67513-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2912-67512-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2912-57230-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2912-67529-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2912-67524-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2912-67514-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2912-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2912-125-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2912-67511-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2912-67510-0x0000000000090000-0x0000000000190000-memory.dmp

Filesize
1024KB

Download
memory/2912-73928-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2912-3-0x00000000002B0000-0x00000000002B1000-memory.dmp

Filesize
4KB

Download
memory/2912-13-0x0000000000405000-0x0000000000406000-memory.dmp

Filesize
4KB

Download
memory/3936-147859-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-73919-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-73971-0x00000000026B0000-0x0000000002706000-memory.dmp

Filesize
344KB

Download
memory/27704-73923-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/27704-73917-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-73925-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-73924-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-73926-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-73969-0x00000000026A0000-0x00000000026F6000-memory.dmp

Filesize
344KB

Download
memory/27704-73972-0x00000000026B0000-0x0000000002706000-memory.dmp

Filesize
344KB

Download
memory/27704-73921-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-73970-0x00000000026B0000-0x0000000002706000-memory.dmp

Filesize
344KB

Download
memory/27704-125542-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-147835-0x00000000026B0000-0x0000000002706000-memory.dmp

Filesize
344KB

Download
memory/27704-73932-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/27704-147842-0x00000000026B0000-0x0000000002706000-memory.dmp

Filesize
344KB

Download
memory/27704-147841-0x00000000026B0000-0x0000000002706000-memory.dmp

Filesize
344KB

Download
memory/27704-147858-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/28016-147851-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/111144-147846-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/111144-147862-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads