modiloader | 71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a

General

Target

71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
Size

326KB
MD5

3b7030abfa1284b2b42657b661b27622
SHA1

461d9623ab32f9aa5b892a55f424e8a2e3da5822
SHA256

71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a
SHA512

8d7f7a77d13073ab29afb8cb5d90ce579ce41c534df0687cd2095d507c159c9ebae4e4d51b84a5a6ca1d9f8a43abd9d04fc301e9356a953d6a00d5dfa93b52ca
SSDEEP

3072:Ie2A0wxDqUpM5scww4chO+O1BmP5DG0sg3i4XZ9WvDZHwdRX/L+gP38XV:IsxD5cwohO+O1sVG0/pZ6iPC8

Score

10^/10

modiloader persistence trojan upx

Malware Config

Signatures

ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
trojan modiloader

Detects Windows executables referencing non-Windows User-Agents 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1148-53-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/1148-51-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
behavioral2/memory/1148-54-0x0000000000400000-0x0000000000414000-memory.dmp	INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA

ModiLoader Second Stage 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1148-53-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1148-51-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2
behavioral2/memory/1148-54-0x0000000000400000-0x0000000000414000-memory.dmp	modiloader_stage2

UPX dump on OEP (original entry point) 17 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1240-0-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/3700-7-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3700-10-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/3700-9-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/1240-12-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	UPX
behavioral2/memory/436-35-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/436-41-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/1148-45-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/4736-44-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/1148-50-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/1148-53-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/1148-51-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/1148-54-0x0000000000400000-0x0000000000414000-memory.dmp	UPX
behavioral2/memory/436-55-0x0000000000400000-0x0000000000454000-memory.dmp	UPX
behavioral2/memory/3700-56-0x0000000000400000-0x000000000040B000-memory.dmp	UPX
behavioral2/memory/4736-58-0x0000000000400000-0x000000000040B000-memory.dmp	UPX

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

Processes:

71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe

Executes dropped EXE 3 IoCs

Processes:

csrsll.execsrsll.execsrsll.exe

pid process

436 csrsll.exe
4736 csrsll.exe
1148 csrsll.exe

pid	process
436	csrsll.exe
4736	csrsll.exe
1148	csrsll.exe

UPX packed file 17 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1240-0-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/3700-7-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3700-10-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/3700-9-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1240-12-0x0000000000400000-0x0000000000454000-memory.dmp	upx
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe	upx
behavioral2/memory/436-35-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/436-41-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/1148-45-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/4736-44-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/1148-50-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1148-53-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1148-51-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/1148-54-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/436-55-0x0000000000400000-0x0000000000454000-memory.dmp	upx
behavioral2/memory/3700-56-0x0000000000400000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/4736-58-0x0000000000400000-0x000000000040B000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe"	reg.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.execsrsll.exe

description	pid	process	target process
PID 1240 set thread context of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 436 set thread context of 4736	436	csrsll.exe	csrsll.exe
PID 436 set thread context of 1148	436	csrsll.exe	csrsll.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

csrsll.exe

description	pid	process
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe
Token: SeDebugPrivilege	4736	csrsll.exe

Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.execsrsll.execsrsll.exe

pid	process
1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
3700	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
436	csrsll.exe
4736	csrsll.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.execmd.execsrsll.exe

description	pid	process	target process
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 1240 wrote to memory of 3700	1240	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
PID 3700 wrote to memory of 4692	3700	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	cmd.exe
PID 3700 wrote to memory of 4692	3700	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	cmd.exe
PID 3700 wrote to memory of 4692	3700	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	cmd.exe
PID 4692 wrote to memory of 4792	4692	cmd.exe	reg.exe
PID 4692 wrote to memory of 4792	4692	cmd.exe	reg.exe
PID 4692 wrote to memory of 4792	4692	cmd.exe	reg.exe
PID 3700 wrote to memory of 436	3700	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	csrsll.exe
PID 3700 wrote to memory of 436	3700	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	csrsll.exe
PID 3700 wrote to memory of 436	3700	71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 4736	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe
PID 436 wrote to memory of 1148	436	csrsll.exe	csrsll.exe

C:\Users\Admin\AppData\Local\Temp\71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
"C:\Users\Admin\AppData\Local\Temp\71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1240

C:\Users\Admin\AppData\Local\Temp\71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe
"C:\Users\Admin\AppData\Local\Temp\71ba1ba32baf2174202673d726ba5f1b2c3755344b49e2cbc2afe51b1bd03f6a.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3700

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MWPOQ.bat" "
3⤵
- Suspicious use of WriteProcessMemory
PID:4692

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
PID:4792

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:436

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4736

C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
4⤵
- Executes dropped EXE
PID:1148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MWPOQ.txt

Filesize
145B

MD5
4eb61ec7816c34ec8c125acadc57ec1b

SHA1
b0015cc865c0bb1a027be663027d3829401a31cc

SHA256
08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff

SHA512
f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1

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

Filesize
326KB

MD5
7e6ecb9c631237a9780ed5021165320a

SHA1
89563ddcd10efc1b053cccf7a53273f50f3e2b9b

SHA256
43dd4cd95624fd46519705aa6a4ec3953e0b8551e96b60ae87ff9ee59a8ec982

SHA512
249da8a8d053fbab128a409e1203cdd7abeaf392801505d5bf8fe141e2a37fa6f9b97e0fae04447d0c37b5e989ccbed9087aa44c087c55a77f4170d52497afca

Download Submit
memory/436-55-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/436-41-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/436-35-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1148-50-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1148-45-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1148-54-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1148-51-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1148-53-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/1240-3-0x00000000022B0000-0x00000000022B2000-memory.dmp

Filesize
8KB

Download
memory/1240-4-0x00000000022C0000-0x00000000022C2000-memory.dmp

Filesize
8KB

Download
memory/1240-5-0x00000000022D0000-0x00000000022D2000-memory.dmp

Filesize
8KB

Download
memory/1240-0-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1240-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1240-6-0x00000000022E0000-0x00000000022E2000-memory.dmp

Filesize
8KB

Download
memory/3700-10-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-7-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-9-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/3700-56-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4736-44-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/4736-58-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads