modiloader | 57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85

Analysis

max time kernel
119s
max time network
17s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
31-12-2024 02:19

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General

Target

57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
Size

90KB
MD5

f0b2a3e8cc8d67f7856c6449dc41ae90
SHA1

7f43547b157e8e3a94dcac6b311c4719dff728ae
SHA256

57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85
SHA512

ac6958f782f6a33dcb0ee181eca5983a475179923f76b6f9cbf7dab3ee63eb4bb57359e07f4621420d385bbcc0463e34a75d8958217b2fc7c8905acdc3283a98
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDA:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3+

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/636-262-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
2724	csrsll.exe
836	csrsll.exe
636	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.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-1-5-21-3290804112-2823094203-3137964600-1000\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 2856 set thread context of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2724 set thread context of 836	2724	csrsll.exe	35
PID 2724 set thread context of 636	2724	csrsll.exe	36

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2856-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2856-91-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2856-82-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1900-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1900-107-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1900-105-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1900-104-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2856-102-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1900-96-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1900-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2856-79-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2856-62-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1900-134-0x0000000003270000-0x00000000032C3000-memory.dmp	upx
behavioral1/files/0x0008000000012117-132.dat	upx
behavioral1/memory/1900-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2724-223-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2724-251-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/636-253-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1900-257-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/836-259-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/636-262-0x0000000000400000-0x0000000000414000-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	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	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe
Token: SeDebugPrivilege	836	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
2724	csrsll.exe
836	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 2856 wrote to memory of 1900	2856	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	30
PID 1900 wrote to memory of 2256	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	31
PID 1900 wrote to memory of 2256	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	31
PID 1900 wrote to memory of 2256	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	31
PID 1900 wrote to memory of 2256	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	31
PID 2256 wrote to memory of 2616	2256	cmd.exe	33
PID 2256 wrote to memory of 2616	2256	cmd.exe	33
PID 2256 wrote to memory of 2616	2256	cmd.exe	33
PID 2256 wrote to memory of 2616	2256	cmd.exe	33
PID 1900 wrote to memory of 2724	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	34
PID 1900 wrote to memory of 2724	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	34
PID 1900 wrote to memory of 2724	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	34
PID 1900 wrote to memory of 2724	1900	57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe	34
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 836	2724	csrsll.exe	35
PID 2724 wrote to memory of 636	2724	csrsll.exe	36
PID 2724 wrote to memory of 636	2724	csrsll.exe	36
PID 2724 wrote to memory of 636	2724	csrsll.exe	36
PID 2724 wrote to memory of 636	2724	csrsll.exe	36
PID 2724 wrote to memory of 636	2724	csrsll.exe	36
PID 2724 wrote to memory of 636	2724	csrsll.exe	36
PID 2724 wrote to memory of 636	2724	csrsll.exe	36
PID 2724 wrote to memory of 636	2724	csrsll.exe	36

C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
"C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe
  "C:\Users\Admin\AppData\Local\Temp\57d73acb936e439ba22604f3f487c472d8cd96b7476d257c522d2a3c32422a85N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\KBVTR.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2256
  - - 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:2616
- - 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:2724
  - - 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:836
  - - 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:636

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\KBVTR.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
af6366a645a276b618e0cb4c83b2802b

SHA1
ab85e5e9032cae7db58fddd72725f971e55be1ab

SHA256
8f6ff2b558e7931da0122792fce895a21c87f98f0837fa5119d9ef1295d44ce8

SHA512
e531a1ec29301583e9abe8e9de2129126e00727dc8d4788a173f618533c6c8578aea7c04894eded7a469518312a13a983b0de24d04c19b948b99daa0b2ed8838

Download Submit
memory/636-262-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/636-253-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/836-259-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-105-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-98-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1900-107-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-211-0x0000000003270000-0x00000000032C3000-memory.dmp

Filesize
332KB

Download
memory/1900-104-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-215-0x0000000003270000-0x00000000032C3000-memory.dmp

Filesize
332KB

Download
memory/1900-96-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-212-0x0000000003270000-0x00000000032C3000-memory.dmp

Filesize
332KB

Download
memory/1900-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-147-0x0000000003270000-0x00000000032C3000-memory.dmp

Filesize
332KB

Download
memory/1900-148-0x0000000003270000-0x00000000032C3000-memory.dmp

Filesize
332KB

Download
memory/1900-149-0x0000000003270000-0x00000000032C3000-memory.dmp

Filesize
332KB

Download
memory/1900-257-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1900-134-0x0000000003270000-0x00000000032C3000-memory.dmp

Filesize
332KB

Download
memory/2724-156-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download
memory/2724-177-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/2724-251-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2724-166-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/2724-223-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2856-71-0x00000000003E0000-0x00000000003E1000-memory.dmp

Filesize
4KB

Download
memory/2856-79-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2856-80-0x0000000000540000-0x0000000000542000-memory.dmp

Filesize
8KB

Download
memory/2856-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2856-62-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2856-102-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2856-82-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2856-91-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2856-28-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/2856-60-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/2856-40-0x0000000000330000-0x0000000000331000-memory.dmp

Filesize
4KB

Download
memory/2856-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2856-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2856-15-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2856-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads