modiloader | cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913e

Analysis

max time kernel
119s
max time network
118s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
12-01-2025 20:11

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General

Target

cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
Size

326KB
MD5

af37f384c70c6c25aa664e99c6d5f720
SHA1

0995917956212d7dd84252b16b8f320690a55831
SHA256

cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913e
SHA512

d384330587333e669eab83f7199cf991eb225f2d6d0e52b7f5de80066458bbdc37d027b8cc4ee7c89d865a4002dafa61560e56d5bfa863f5f78de886319ccb45
SSDEEP

3072:h0e2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XVJ:h0sxD5cwohO+O1sVG0/pZ6iPC8c

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/2352-255-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
1268	csrsll.exe
828	csrsll.exe
2352	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.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-1-5-21-312935884-697965778-3955649944-1000\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 2204 set thread context of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 1268 set thread context of 828	1268	csrsll.exe	36
PID 1268 set thread context of 2352	1268	csrsll.exe	37

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2204-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/2204-88-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/1908-97-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1908-103-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1908-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1908-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1908-93-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1908-91-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2204-105-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/files/0x0005000000004ed7-129.dat	upx
behavioral1/memory/1908-148-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1268-206-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/1908-226-0x00000000034A0000-0x00000000034F4000-memory.dmp	upx
behavioral1/memory/1268-243-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral1/memory/1908-246-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/1908-228-0x00000000034A0000-0x00000000034F4000-memory.dmp	upx
behavioral1/memory/2352-242-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/828-252-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2352-255-0x0000000000400000-0x0000000000414000-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	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe
Token: SeDebugPrivilege	828	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
1268	csrsll.exe
828	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 2204 wrote to memory of 1908	2204	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	31
PID 1908 wrote to memory of 1604	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	32
PID 1908 wrote to memory of 1604	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	32
PID 1908 wrote to memory of 1604	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	32
PID 1908 wrote to memory of 1604	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	32
PID 1604 wrote to memory of 2936	1604	cmd.exe	34
PID 1604 wrote to memory of 2936	1604	cmd.exe	34
PID 1604 wrote to memory of 2936	1604	cmd.exe	34
PID 1604 wrote to memory of 2936	1604	cmd.exe	34
PID 1908 wrote to memory of 1268	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	35
PID 1908 wrote to memory of 1268	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	35
PID 1908 wrote to memory of 1268	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	35
PID 1908 wrote to memory of 1268	1908	cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe	35
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 828	1268	csrsll.exe	36
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37
PID 1268 wrote to memory of 2352	1268	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
"C:\Users\Admin\AppData\Local\Temp\cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Users\Admin\AppData\Local\Temp\cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe
  "C:\Users\Admin\AppData\Local\Temp\cb091ca11ff2dfb3274b1469cf04b4cac0169976dfc0ebb96773e8ba9afb913eN.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1908
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\BSKGB.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1604
  - - 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:2936
- - 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:1268
  - - 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:828
  - - 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:2352

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\BSKGB.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
b52144ba07d3e82866b64c08e28da6a0

SHA1
0df495555442e61dfee74daf3327e6e83bf335d1

SHA256
6aca04c34a35b5529c97ba53b6220aa3b941ac176d7f4b3ef5c626c7ceb20c5f

SHA512
905e47be59b505d884639467cbc4a9c1dad335733e11548ee805b4f0514dd7819f2f605e4cfcd8db4c74557fa84ecfc42ff9f627e3c384238f085e3a876c4094

Download Submit
memory/828-252-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1268-243-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1268-172-0x0000000000310000-0x0000000000311000-memory.dmp

Filesize
4KB

Download
memory/1268-180-0x0000000000330000-0x0000000000331000-memory.dmp

Filesize
4KB

Download
memory/1268-206-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1268-161-0x00000000002A0000-0x00000000002A1000-memory.dmp

Filesize
4KB

Download
memory/1268-151-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/1908-89-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-144-0x00000000034A0000-0x00000000034F4000-memory.dmp

Filesize
336KB

Download
memory/1908-97-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-103-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-95-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1908-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-91-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-228-0x00000000034A0000-0x00000000034F4000-memory.dmp

Filesize
336KB

Download
memory/1908-246-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-226-0x00000000034A0000-0x00000000034F4000-memory.dmp

Filesize
336KB

Download
memory/1908-148-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1908-143-0x00000000034A0000-0x00000000034F4000-memory.dmp

Filesize
336KB

Download
memory/2204-15-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/2204-28-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2204-78-0x00000000004E0000-0x00000000004E2000-memory.dmp

Filesize
8KB

Download
memory/2204-88-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2204-70-0x00000000004C0000-0x00000000004C1000-memory.dmp

Filesize
4KB

Download
memory/2204-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/2204-60-0x00000000004A0000-0x00000000004A1000-memory.dmp

Filesize
4KB

Download
memory/2204-40-0x0000000000460000-0x0000000000461000-memory.dmp

Filesize
4KB

Download
memory/2204-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2204-105-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/2204-3-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2204-5-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/2352-242-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2352-255-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads