modiloader | 83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab

Analysis

max time kernel
118s
max time network
118s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
31-12-2024 06:59

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General

Target

83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe
Size

90KB
MD5

33580792fc42c9d3de47ebbc1c858198
SHA1

eaea11491569b11adf9893dd111f452035e36af6
SHA256

83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab
SHA512

7ca1fe33d0f937ae8b6b594b1e404e6f7c6f29e465d0855b813fe86c6c891a40a8e6aa21fbd22f295fe4eaf34797a7c72396f82fec6d07e37513980c6333d9a6
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDh:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3f

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 4 IoCs

resource	yara_rule
behavioral2/memory/752-55-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/752-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/752-57-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/752-63-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe

Executes dropped EXE 3 IoCs

pid	Process
1672	csrsll.exe
1548	csrsll.exe
752	csrsll.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-1-5-21-2437139445-1151884604-3026847218-1000\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 3016 set thread context of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 1672 set thread context of 1548	1672	csrsll.exe	101
PID 1672 set thread context of 752	1672	csrsll.exe	102

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3016-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3016-5-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3476-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3476-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3016-11-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/3476-13-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/files/0x000b000000023b78-29.dat	upx
behavioral2/memory/3476-39-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1672-40-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/1672-41-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/752-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/752-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/752-55-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/752-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1672-58-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral2/memory/752-57-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/3476-61-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1548-62-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/752-63-0x0000000000400000-0x0000000000414000-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	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe
Token: SeDebugPrivilege	1548	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe
3476	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe
1672	csrsll.exe
1548	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3016 wrote to memory of 3476	3016	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	85
PID 3476 wrote to memory of 4528	3476	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	90
PID 3476 wrote to memory of 4528	3476	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	90
PID 3476 wrote to memory of 4528	3476	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	90
PID 4528 wrote to memory of 2284	4528	cmd.exe	94
PID 4528 wrote to memory of 2284	4528	cmd.exe	94
PID 4528 wrote to memory of 2284	4528	cmd.exe	94
PID 3476 wrote to memory of 1672	3476	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	95
PID 3476 wrote to memory of 1672	3476	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	95
PID 3476 wrote to memory of 1672	3476	83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe	95
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 1548	1672	csrsll.exe	101
PID 1672 wrote to memory of 752	1672	csrsll.exe	102
PID 1672 wrote to memory of 752	1672	csrsll.exe	102
PID 1672 wrote to memory of 752	1672	csrsll.exe	102
PID 1672 wrote to memory of 752	1672	csrsll.exe	102
PID 1672 wrote to memory of 752	1672	csrsll.exe	102
PID 1672 wrote to memory of 752	1672	csrsll.exe	102
PID 1672 wrote to memory of 752	1672	csrsll.exe	102
PID 1672 wrote to memory of 752	1672	csrsll.exe	102

C:\Users\Admin\AppData\Local\Temp\83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe
"C:\Users\Admin\AppData\Local\Temp\83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3016
- C:\Users\Admin\AppData\Local\Temp\83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe
  "C:\Users\Admin\AppData\Local\Temp\83d5e26914deb2da2844a2d7a8236d7ee09d94aaf0f9a57f426d9074d5e6a7ab.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3476
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KSHRH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4528
  - - 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:2284
- - 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:1672
  - - 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:1548
  - - 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:752

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

Query Registry

T1012

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\KSHRH.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
78b69af08402a1890cab451450d1fde4

SHA1
d5a68b1703e7150a8d0b34dd54a4e1a691e05f77

SHA256
4be53077ed566661d67fd565b86c3cce78715d14bba42709a6ce107aa43c3fe3

SHA512
dfc89608bd2c4a6da389bf92707106f7e5f974202b691f29ad75a7f593c2536e96919834f142704adc4603b4830dba5d1d7917d23f4cb7a6bf672c70d4e7a1f4

Download Submit
memory/752-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/752-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/752-63-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/752-57-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/752-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/752-55-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1548-62-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1672-58-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1672-40-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1672-41-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3016-5-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3016-6-0x0000000002B80000-0x0000000002B82000-memory.dmp

Filesize
8KB

Download
memory/3016-4-0x0000000002B60000-0x0000000002B62000-memory.dmp

Filesize
8KB

Download
memory/3016-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3016-3-0x0000000002B50000-0x0000000002B52000-memory.dmp

Filesize
8KB

Download
memory/3016-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/3476-13-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-61-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3476-39-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads