modiloader | 3f37fd68d7d8a54584ab421980a8e9273e679e62b99077a5ddbaad56de930130

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
06/09/2024, 03:37

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General

Target

cd52912890fa4bbff5e3e682879cacd0N.exe
Size

90KB
MD5

cd52912890fa4bbff5e3e682879cacd0
SHA1

29b3a4a77132dbde63a963828553c3f2f097dd65
SHA256

3f37fd68d7d8a54584ab421980a8e9273e679e62b99077a5ddbaad56de930130
SHA512

f9608d641f6ef40d441f1e9454f02d8af414acac66d75fb7b15d1e936fb981ce24a1aa3c790992385bf369d80dbcf3abae6f347b1ca3c10093b1d15cfeb8bba4
SSDEEP

1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y

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 Second Stage 1 IoCs

resource	yara_rule
behavioral1/memory/1688-258-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

Executes dropped EXE 3 IoCs

pid	Process
2760	csrsll.exe
1328	csrsll.exe
1688	csrsll.exe

Loads dropped DLL 5 IoCs

pid	Process
2580	cd52912890fa4bbff5e3e682879cacd0N.exe
2580	cd52912890fa4bbff5e3e682879cacd0N.exe
2580	cd52912890fa4bbff5e3e682879cacd0N.exe
2580	cd52912890fa4bbff5e3e682879cacd0N.exe
2580	cd52912890fa4bbff5e3e682879cacd0N.exe

UPX packed file 19 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1968-26-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1968-106-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1968-89-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2580-104-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-101-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-100-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-98-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-94-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2580-92-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/files/0x0009000000019450-131.dat	upx
behavioral1/memory/2580-133-0x0000000003130000-0x0000000003183000-memory.dmp	upx
behavioral1/memory/2580-153-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2760-214-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/2580-254-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral1/memory/2760-248-0x0000000000400000-0x0000000000453000-memory.dmp	upx
behavioral1/memory/1688-247-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1688-258-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral1/memory/1328-257-0x0000000000400000-0x000000000040B000-memory.dmp	upx

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-1-5-21-1488793075-819845221-1497111674-1000\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 1968 set thread context of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 2760 set thread context of 1328	2760	csrsll.exe	36
PID 2760 set thread context of 1688	2760	csrsll.exe	37

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	cd52912890fa4bbff5e3e682879cacd0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cd52912890fa4bbff5e3e682879cacd0N.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	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe
Token: SeDebugPrivilege	1328	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1968	cd52912890fa4bbff5e3e682879cacd0N.exe
2580	cd52912890fa4bbff5e3e682879cacd0N.exe
2760	csrsll.exe
1328	csrsll.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 1968 wrote to memory of 2580	1968	cd52912890fa4bbff5e3e682879cacd0N.exe	31
PID 2580 wrote to memory of 2136	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	32
PID 2580 wrote to memory of 2136	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	32
PID 2580 wrote to memory of 2136	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	32
PID 2580 wrote to memory of 2136	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	32
PID 2136 wrote to memory of 1080	2136	cmd.exe	34
PID 2136 wrote to memory of 1080	2136	cmd.exe	34
PID 2136 wrote to memory of 1080	2136	cmd.exe	34
PID 2136 wrote to memory of 1080	2136	cmd.exe	34
PID 2580 wrote to memory of 2760	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	35
PID 2580 wrote to memory of 2760	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	35
PID 2580 wrote to memory of 2760	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	35
PID 2580 wrote to memory of 2760	2580	cd52912890fa4bbff5e3e682879cacd0N.exe	35
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1328	2760	csrsll.exe	36
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37
PID 2760 wrote to memory of 1688	2760	csrsll.exe	37

C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe
"C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1968
- C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe
  "C:\Users\Admin\AppData\Local\Temp\cd52912890fa4bbff5e3e682879cacd0N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2580
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\XXKMH.bat" "
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2136
  - - 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:1080
- - 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:2760
  - - 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:1328
  - - 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:1688

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\XXKMH.bat

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
90KB

MD5
a1aa3786ed25d24ece2518b0e1a9a98b

SHA1
1b4aeb62eb338b981e17e3b7ed376236e175db58

SHA256
ddc86d71e497160a2cd87277bb2ad564373d764d9a47a38c3c8ef4c2e0c44034

SHA512
24bf9462d2a2d8be4f261d684e667af92dfb819e6bdab08fb49613b1bc7b0c889f5bf7aab619a18afa201ba14cf47a2250822c7a08b7d2c7ce6149c4307a674c

Download Submit
memory/1328-257-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1688-247-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1688-258-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1968-71-0x0000000000670000-0x0000000000671000-memory.dmp

Filesize
4KB

Download
memory/1968-89-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1968-25-0x0000000000404000-0x0000000000405000-memory.dmp

Filesize
4KB

Download
memory/1968-0-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1968-61-0x00000000003F0000-0x00000000003F1000-memory.dmp

Filesize
4KB

Download
memory/1968-29-0x0000000000290000-0x0000000000291000-memory.dmp

Filesize
4KB

Download
memory/1968-106-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1968-26-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/1968-41-0x00000000003B0000-0x00000000003B1000-memory.dmp

Filesize
4KB

Download
memory/1968-103-0x0000000002600000-0x0000000002653000-memory.dmp

Filesize
332KB

Download
memory/1968-79-0x0000000000690000-0x0000000000692000-memory.dmp

Filesize
8KB

Download
memory/1968-5-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/1968-15-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/1968-3-0x00000000001D0000-0x00000000001D1000-memory.dmp

Filesize
4KB

Download
memory/2580-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-254-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-96-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2580-98-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-133-0x0000000003130000-0x0000000003183000-memory.dmp

Filesize
332KB

Download
memory/2580-149-0x0000000003130000-0x0000000003183000-memory.dmp

Filesize
332KB

Download
memory/2580-148-0x0000000003130000-0x0000000003183000-memory.dmp

Filesize
332KB

Download
memory/2580-147-0x0000000003130000-0x0000000003183000-memory.dmp

Filesize
332KB

Download
memory/2580-146-0x0000000003130000-0x0000000003183000-memory.dmp

Filesize
332KB

Download
memory/2580-153-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-104-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-209-0x0000000003130000-0x0000000003183000-memory.dmp

Filesize
332KB

Download
memory/2580-101-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-100-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2580-94-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/2760-166-0x00000000001E0000-0x00000000001E1000-memory.dmp

Filesize
4KB

Download
memory/2760-248-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2760-177-0x0000000000280000-0x0000000000281000-memory.dmp

Filesize
4KB

Download
memory/2760-214-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2760-156-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads