modiloader | 99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
16-12-2024 03:05

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General

Target

99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
Size

94KB
MD5

9fd32c193f22474bf0eba6b411c70ef0
SHA1

792f9fb215a8a0820bf8a7b5d422799d1fa3df3f
SHA256

99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3
SHA512

1bda9b4dc79d0206b55a2257a1cbf485e5ad8bbd7f850bdf8ed06a4cf85c85132fa6f67b66288b1d2ab02f16e6a288b384efd259350d5754f97ae2acad05c58b
SSDEEP

1536:/pdyL9GjGiwA1z0PmVggNJKbFD2BBMx1RiwmPJr3raDk5BRf13KH9m2POE/:/pdyLALwACPmV3NYaYLiwIt3raA5BRfM

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/81816-147867-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
70392	csrsll.exe
10412	csrsll.exe
81816	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.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-1-5-21-2703099537-420551529-3771253338-1000\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 2572 set thread context of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 70392 set thread context of 10412	70392	csrsll.exe	36
PID 70392 set thread context of 81816	70392	csrsll.exe	37

UPX packed file 20 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2572-0-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/2572-1581-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/2572-73919-0x0000000002540000-0x0000000002596000-memory.dmp	upx
behavioral1/memory/69816-73927-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/69816-73924-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/69816-73922-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/69816-73928-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2572-73929-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/69816-73930-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/69816-73957-0x0000000003310000-0x0000000003366000-memory.dmp	upx
behavioral1/files/0x0009000000018710-73955.dat	upx
behavioral1/memory/70392-73974-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/69816-83335-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/70392-103024-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/10412-147847-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/81816-147853-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/70392-147855-0x0000000000400000-0x0000000000456000-memory.dmp	upx
behavioral1/memory/69816-147862-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/10412-147864-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/81816-147867-0x0000000000400000-0x0000000000414000-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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

description	pid	Process
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe
Token: SeDebugPrivilege	10412	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
70392	csrsll.exe
10412	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 2572 wrote to memory of 69816	2572	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	31
PID 69816 wrote to memory of 70068	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	32
PID 69816 wrote to memory of 70068	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	32
PID 69816 wrote to memory of 70068	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	32
PID 69816 wrote to memory of 70068	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	32
PID 70068 wrote to memory of 70452	70068	cmd.exe	34
PID 70068 wrote to memory of 70452	70068	cmd.exe	34
PID 70068 wrote to memory of 70452	70068	cmd.exe	34
PID 70068 wrote to memory of 70452	70068	cmd.exe	34
PID 69816 wrote to memory of 70392	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	35
PID 69816 wrote to memory of 70392	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	35
PID 69816 wrote to memory of 70392	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	35
PID 69816 wrote to memory of 70392	69816	99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe	35
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 10412	70392	csrsll.exe	36
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37
PID 70392 wrote to memory of 81816	70392	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
"C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2572
- C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe
  "C:\Users\Admin\AppData\Local\Temp\99b31ee4ad5e944bd1ec7c8e98cbddda08017f12f75e339da7e3017c81921ca3N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:69816
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\PCOWN.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:70068
  - - 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:70452
- - 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:70392
  - - 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:10412
  - - 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:81816

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\PCOWN.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
94KB

MD5
956d5ba0cdeaffd9f71ce38163448886

SHA1
4166de06f3e0e6255cd66dd00853bf3110a17744

SHA256
cacf093d5fa89aeb256ccca49729a0879ec13556021ec46be2e1e3e4d990c62e

SHA512
8177b94316cf5c1ac60837d96abcd1ac98387d1914524f0c2bc4dec2eb0562412c4116779ca49c1bc714d137d0c758064762d4bb753fde34290b470c8cce73fb

Download Submit
memory/2572-73929-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2572-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2572-13-0x0000000000405000-0x0000000000406000-memory.dmp

Filesize
4KB

Download
memory/2572-1581-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/2572-39117-0x0000000000405000-0x0000000000406000-memory.dmp

Filesize
4KB

Download
memory/2572-73919-0x0000000002540000-0x0000000002596000-memory.dmp

Filesize
344KB

Download
memory/2572-0-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/10412-147864-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/10412-147847-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-73924-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-93255-0x0000000003310000-0x0000000003366000-memory.dmp

Filesize
344KB

Download
memory/69816-73930-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-73920-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-73957-0x0000000003310000-0x0000000003366000-memory.dmp

Filesize
344KB

Download
memory/69816-73922-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-73972-0x0000000003310000-0x0000000003366000-memory.dmp

Filesize
344KB

Download
memory/69816-73971-0x0000000003310000-0x0000000003366000-memory.dmp

Filesize
344KB

Download
memory/69816-73968-0x0000000003310000-0x0000000003366000-memory.dmp

Filesize
344KB

Download
memory/69816-73927-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-83335-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-73928-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-99531-0x0000000003310000-0x0000000003366000-memory.dmp

Filesize
344KB

Download
memory/69816-99507-0x0000000003310000-0x0000000003366000-memory.dmp

Filesize
344KB

Download
memory/69816-147862-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/69816-73926-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/70392-147855-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/70392-103024-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/70392-73974-0x0000000000400000-0x0000000000456000-memory.dmp

Filesize
344KB

Download
memory/81816-147853-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/81816-147867-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads