Analysis
- max time kernel
148s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system - submitted
29/04/2024, 03:14
Behavioral task
behavioral1
Sample
e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe
Resource
win7-20240215-en
windows7-x64
3 signatures
150 seconds
Behavioral task
behavioral2
Sample
e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe
Resource
win10v2004-20240426-en
windows10-2004-x64
13 signatures
150 seconds
General
- Target e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe
- Size 130KB
- Sample240429-drbq8agg5x
- SHA256 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18
- MD5 e262b7d18020a381ccdec70ada2931a4
- SHA1 6aef70ae70e72a8ab08609b328673bcb81d4edb3
- SHA512 72aabb8c0030e51d42c447a4f89bcafd8512eba0a81e91d05b6e9f63d8c6bcfb1696440c8bb01f739c7fd2d079a31dc701c542c275652a7984b738e093a80484
- SSDEEP 1536:eH1ZaQvR1KiX3NK6I+hZhYrt/w5Q6G6IpiRYzz9qJHhhnm0yG5aP/5UROXTmZx:SKQJcinxphkG5Q6GdpIOkJHhKRyOXKz
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
- Detects Windows executables referencing non-Windows User-Agents 5 IoCs
resource yara_rule behavioral2/memory/4204-49-0x0000000000400000-0x0000000000411000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/4204-45-0x0000000000400000-0x0000000000411000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/4204-53-0x0000000000400000-0x0000000000411000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/4204-57-0x0000000000400000-0x0000000000411000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA behavioral2/memory/4204-54-0x0000000000400000-0x0000000000411000-memory.dmp INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA - ModiLoader Second Stage 5 IoCs
resource yara_rule behavioral2/memory/4204-49-0x0000000000400000-0x0000000000411000-memory.dmp modiloader_stage2 behavioral2/memory/4204-45-0x0000000000400000-0x0000000000411000-memory.dmp modiloader_stage2 behavioral2/memory/4204-53-0x0000000000400000-0x0000000000411000-memory.dmp modiloader_stage2 behavioral2/memory/4204-57-0x0000000000400000-0x0000000000411000-memory.dmp modiloader_stage2 behavioral2/memory/4204-54-0x0000000000400000-0x0000000000411000-memory.dmp modiloader_stage2 - UPX dump on OEP (original entry point) 11 IoCs
resource yara_rule behavioral2/memory/1460-0-0x0000000000400000-0x0000000000423000-memory.dmp UPX behavioral2/memory/4692-7-0x0000000000400000-0x000000000040B000-memory.dmp UPX behavioral2/memory/1460-12-0x0000000000400000-0x0000000000423000-memory.dmp UPX behavioral2/memory/4692-11-0x0000000000400000-0x000000000040B000-memory.dmp UPX behavioral2/memory/4692-13-0x0000000000400000-0x000000000040B000-memory.dmp UPX behavioral2/files/0x000a00000001d9e8-29.dat UPX behavioral2/memory/4296-37-0x0000000000400000-0x0000000000423000-memory.dmp UPX behavioral2/memory/4020-51-0x0000000000400000-0x000000000040B000-memory.dmp UPX behavioral2/memory/4296-58-0x0000000000400000-0x0000000000423000-memory.dmp UPX behavioral2/memory/4692-59-0x0000000000400000-0x000000000040B000-memory.dmp UPX behavioral2/memory/4020-61-0x0000000000400000-0x000000000040B000-memory.dmp UPX - Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe - Executes dropped EXE 3 IoCs
pid Process 4296 Flaseher.exe 4020 Flaseher.exe 4204 Flaseher.exe -
resource yara_rule behavioral2/memory/1460-0-0x0000000000400000-0x0000000000423000-memory.dmp upx behavioral2/memory/4692-7-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/1460-12-0x0000000000400000-0x0000000000423000-memory.dmp upx behavioral2/memory/4692-11-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/4692-13-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/files/0x000a00000001d9e8-29.dat upx behavioral2/memory/4296-37-0x0000000000400000-0x0000000000423000-memory.dmp upx behavioral2/memory/4020-51-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/4296-58-0x0000000000400000-0x0000000000423000-memory.dmp upx behavioral2/memory/4692-59-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral2/memory/4020-61-0x0000000000400000-0x000000000040B000-memory.dmp upx - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\.Flasfh = "C:\\Users\\Admin\\AppData\\Roaming\\..Flash\\Flaseher.exe" reg.exe - Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1460 set thread context of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 4296 set thread context of 4020 4296 Flaseher.exe 93 PID 4296 set thread context of 4204 4296 Flaseher.exe 94 - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe Token: SeDebugPrivilege 4020 Flaseher.exe - Suspicious use of SetWindowsHookEx 4 IoCs
pid Process 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 4692 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 4296 Flaseher.exe 4020 Flaseher.exe - Suspicious use of WriteProcessMemory 38 IoCs
description pid Process procid_target PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 1460 wrote to memory of 4692 1460 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 87 PID 4692 wrote to memory of 3308 4692 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 88 PID 4692 wrote to memory of 3308 4692 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 88 PID 4692 wrote to memory of 3308 4692 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 88 PID 3308 wrote to memory of 444 3308 cmd.exe 91 PID 3308 wrote to memory of 444 3308 cmd.exe 91 PID 3308 wrote to memory of 444 3308 cmd.exe 91 PID 4692 wrote to memory of 4296 4692 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 92 PID 4692 wrote to memory of 4296 4692 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 92 PID 4692 wrote to memory of 4296 4692 e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe 92 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4020 4296 Flaseher.exe 93 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94 PID 4296 wrote to memory of 4204 4296 Flaseher.exe 94
Processes
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C:\Users\Admin\AppData\Local\Temp\e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe"C:\Users\Admin\AppData\Local\Temp\e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1460 -
C:\Users\Admin\AppData\Local\Temp\e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe"C:\Users\Admin\AppData\Local\Temp\e2c55fe1fa14508206c5d8d051e96471f83e299bccabe23d972780e534a5ca18.exe"2⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4692 -
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KAVSR.bat" "3⤵
- Suspicious use of WriteProcessMemory
PID:3308 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v ".Flasfh" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe" /f4⤵
- Adds Run key to start application
PID:444
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C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe"C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4296 -
C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe"C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe"4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:4020
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C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe"C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe"4⤵
- Executes dropped EXE
PID:4204
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\KAVSR.txt
- Size 145B
- SHA256 7ccfeff356fdccc9145bd1e263aa1c56360ca7b6552ed5a5665c596d02a627ed
- MD5 da0cbe87b720a79b294147ed6a4b98be
- SHA1 ebf0dc9efd7a12cb192e355cda87546acb4ab360
- SHA512 f55c4a3d24d2f11db5eda3c816d1cd3b8804a171a7bf715b13d60788247fbb352eafaa5bd4e0a8086c1013396be0a48c7bdb904ab0f974fa0c75e81e3d365acc
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\..Flash\Flaseher.exe
- Size 130KB
- SHA256 478717e35ec251a90bf88b3b5859c593aaffd147635ff66537bb7026a57f2307
- MD5 953652ec3f16294325afee5ff116aa2a
- SHA1 4713ddecf94de3c899fe3c2acb7ab90ddcdb0742
- SHA512 4c4d75bd861ed7b4bb174dfb6f6a87f3da4ec941fc9dcde9c6e06472d2dfeda26d920cfe76f6101d0623127ac0274173e78bc31925e9c458312a5a9fa813d2f5
- SSDEEP 1536:eH1ZaQvR1KiX3NK6I+hZhYrt/w5Q6G6IpiRYzz9qJHhhnm0yG5aP/5UROXTmZe:SKQJcinxphkG5Q6GdpIOkJHhKRyOXK4
- MD5 SHA1 SHA512 SSDEEP