modiloader | 8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c

Analysis

max time kernel
149s
max time network
17s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
08-12-2024 00:24

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General

Target

8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
Size

90KB
MD5

c1c8f1d9e6e7f6e58e042c55f8b70211
SHA1

beb6749b1867ccf67fb126aa468d9a19486d8902
SHA256

8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c
SHA512

1abbe92c1b5a29cc309de4f892090d08a15ecb94d4ba0fc4b79fd0715f77e99f56289ac74a911c9175e8dc146dd2492e4081afc5f38f550e86d12d2e04cc942c
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDB:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3X

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/2512-258-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
572	csrsll.exe
1932	csrsll.exe
2512	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.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 2604 set thread context of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 572 set thread context of 1932	572	csrsll.exe	35
PID 572 set thread context of 2512	572	csrsll.exe	36

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2604-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2604-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2604-90-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2604-81-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2368-96-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2368-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2368-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2368-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2368-104-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2604-102-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2368-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x00090000000120fe-132.dat	upx
behavioral1/memory/2368-150-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/572-209-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2512-247-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/2368-254-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/572-250-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1932-255-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2512-258-0x0000000000400000-0x0000000000414000-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	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.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	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe
Token: SeDebugPrivilege	1932	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
572	csrsll.exe
1932	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2604 wrote to memory of 2368	2604	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	30
PID 2368 wrote to memory of 1976	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	31
PID 2368 wrote to memory of 1976	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	31
PID 2368 wrote to memory of 1976	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	31
PID 2368 wrote to memory of 1976	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	31
PID 1976 wrote to memory of 1312	1976	cmd.exe	33
PID 1976 wrote to memory of 1312	1976	cmd.exe	33
PID 1976 wrote to memory of 1312	1976	cmd.exe	33
PID 1976 wrote to memory of 1312	1976	cmd.exe	33
PID 2368 wrote to memory of 572	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	34
PID 2368 wrote to memory of 572	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	34
PID 2368 wrote to memory of 572	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	34
PID 2368 wrote to memory of 572	2368	8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe	34
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 1932	572	csrsll.exe	35
PID 572 wrote to memory of 2512	572	csrsll.exe	36
PID 572 wrote to memory of 2512	572	csrsll.exe	36
PID 572 wrote to memory of 2512	572	csrsll.exe	36
PID 572 wrote to memory of 2512	572	csrsll.exe	36
PID 572 wrote to memory of 2512	572	csrsll.exe	36
PID 572 wrote to memory of 2512	572	csrsll.exe	36
PID 572 wrote to memory of 2512	572	csrsll.exe	36
PID 572 wrote to memory of 2512	572	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
"C:\Users\Admin\AppData\Local\Temp\8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2604
- C:\Users\Admin\AppData\Local\Temp\8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe
  "C:\Users\Admin\AppData\Local\Temp\8091803c5f4b3b1faef8325575a6c603c7c3df0130bfa1100e077a4229da785c.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\PURFR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1976
  - - 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:1312
- - 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:572
  - - 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:1932
  - - 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:2512

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\PURFR.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
8f81d638b592e0079659cf882d5a857b

SHA1
025f79263575ae15ae5a18d3dfde0271d29f0f0f

SHA256
ff3cffd9dad035946e667ed3ab90a13e2d097b6a387cc34b9217981949cdd28a

SHA512
f93c9067536909b32f7dd05e292718a605c04cdcf508cb07c1957bf0e19be1e2dce65448965e3f09e9aa00004c9ec8e1f2acfbd0a21bca3f42421cb98bed33e0

Download Submit
memory/572-250-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/572-174-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/572-209-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/572-163-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/572-153-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1932-255-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-179-0x0000000002690000-0x00000000026E3000-memory.dmp

Filesize
332KB

Download
memory/2368-246-0x0000000002690000-0x00000000026E3000-memory.dmp

Filesize
332KB

Download
memory/2368-254-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-150-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-146-0x0000000002690000-0x00000000026E3000-memory.dmp

Filesize
332KB

Download
memory/2368-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-96-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-98-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2368-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2368-104-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2512-247-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2512-258-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2604-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2604-61-0x0000000000350000-0x0000000000351000-memory.dmp

Filesize
4KB

Download
memory/2604-91-0x00000000004D0000-0x0000000000523000-memory.dmp

Filesize
332KB

Download
memory/2604-71-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2604-41-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/2604-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2604-102-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2604-29-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2604-15-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2604-90-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2604-79-0x00000000003D0000-0x00000000003D2000-memory.dmp

Filesize
8KB

Download
memory/2604-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2604-81-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2604-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2604-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads