Analysis
- max time kernel
147s - max time network
165s - platform
windows10_x64 - resource
win10v20210410 - submitted
20/06/2021, 08:51
Static task
static1
Behavioral task
behavioral1
Sample
BC8478F5CAA7B719234C8E1CF8395B12.exe
Resource
win7v20210408
0 signatures
0 seconds
General
- Target BC8478F5CAA7B719234C8E1CF8395B12.exe
- Size 10.7MB
- Sample210620-13g2cn2bpa
- SHA256 f5a558eba4843612e1b2e7bbfb431932a94bdc86f9411c0529f4216bcfe0ef02
- MD5 bc8478f5caa7b719234c8e1cf8395b12
- SHA1 e0826e5b992b7aa566c557c71d6614804bd1430b
- SHA512 5416ef09f8768f0ef6bddb85257c605539f62602dcc251ea47332190fd923fbf3b12e2bc0db8517513d4218dc4f68efdd2c6c1c0b3426c918c76b1d297abc940
- MD5 SHA1 SHA512
Malware Config
Extracted
Family
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quasar
Version
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1.4.0.0
Botnet
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Office
C2
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5.61.62.193:5552
Mutex
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yeGmQfVnPgbImyPaxF
Attributes
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encryption_key
NW9ZIW6yy48cx5RgKTcR
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install_name
csrss.exe
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log_directory
Logs
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reconnect_delay
3000
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startup_key
NET framework
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subdirectory
SubDir
Signatures
- Quasar Payload 3 IoCs
resource yara_rule behavioral2/memory/2008-204-0x0000000000740000-0x000000000078E000-memory.dmp family_quasar behavioral2/memory/2008-211-0x0000000004F10000-0x000000000540E000-memory.dmp family_quasar behavioral2/memory/3468-216-0x00000000011A0000-0x000000000124E000-memory.dmp family_quasar - RedLine
RedLine Stealer is a malware family written in C#, first appearing in early 2020.
- RedLine Payload 1 IoCs
resource yara_rule behavioral2/memory/780-217-0x00000000003A0000-0x00000000003BE000-memory.dmp family_redline - Downloads MZ/PE file
- Executes dropped EXE 12 IoCs
pid Process 1916 BC8478F5CAA7B719234C8E1CF8395B12.tmp 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 1960 SRBPolaris.exe 2808 driv.exe 2120 CCLI.exe 688 ref.exe 4028 Velavi.exe.com 2200 Velavi.exe.com 3064 Rivederlo.exe.com 3468 Rivederlo.exe.com 2008 RegAsm.exe 780 RegAsm.exe - Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uLpXHRtLdZ.url Velavi.exe.com - Loads dropped DLL 1 IoCs
pid Process 2808 driv.exe - Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 25 ip-api.com - Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
pid Process 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe 1960 SRBPolaris.exe - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2200 set thread context of 2008 2200 Velavi.exe.com 102 PID 3468 set thread context of 780 3468 Rivederlo.exe.com 104 - Drops file in Program Files directory 6 IoCs
description ioc Process File opened for modification C:\Program Files (x86)\My Program\SRBPolaris.exe BC8478F5CAA7B719234C8E1CF8395B12.tmp File opened for modification C:\Program Files (x86)\My Program\driv.exe BC8478F5CAA7B719234C8E1CF8395B12.tmp File opened for modification C:\Program Files (x86)\My Program\flash.dll BC8478F5CAA7B719234C8E1CF8395B12.tmp File created C:\Program Files (x86)\My Program\is-LAE0Q.tmp BC8478F5CAA7B719234C8E1CF8395B12.tmp File created C:\Program Files (x86)\My Program\is-S551G.tmp BC8478F5CAA7B719234C8E1CF8395B12.tmp File created C:\Program Files (x86)\My Program\is-PS834.tmp BC8478F5CAA7B719234C8E1CF8395B12.tmp - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Runs ping.exe 1 TTPs 2 IoCs
pid Process 1408 PING.EXE 2184 PING.EXE - Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 780 RegAsm.exe 780 RegAsm.exe - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2008 RegAsm.exe Token: SeDebugPrivilege 780 RegAsm.exe - Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 2008 RegAsm.exe - Suspicious use of WriteProcessMemory 64 IoCs
description pid Process procid_target PID 3944 wrote to memory of 1916 3944 BC8478F5CAA7B719234C8E1CF8395B12.exe 75 PID 3944 wrote to memory of 1916 3944 BC8478F5CAA7B719234C8E1CF8395B12.exe 75 PID 3944 wrote to memory of 1916 3944 BC8478F5CAA7B719234C8E1CF8395B12.exe 75 PID 1916 wrote to memory of 4012 1916 BC8478F5CAA7B719234C8E1CF8395B12.tmp 76 PID 1916 wrote to memory of 4012 1916 BC8478F5CAA7B719234C8E1CF8395B12.tmp 76 PID 1916 wrote to memory of 4012 1916 BC8478F5CAA7B719234C8E1CF8395B12.tmp 76 PID 4012 wrote to memory of 2940 4012 BC8478F5CAA7B719234C8E1CF8395B12.exe 78 PID 4012 wrote to memory of 2940 4012 BC8478F5CAA7B719234C8E1CF8395B12.exe 78 PID 4012 wrote to memory of 2940 4012 BC8478F5CAA7B719234C8E1CF8395B12.exe 78 PID 2940 wrote to memory of 1960 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 79 PID 2940 wrote to memory of 1960 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 79 PID 2940 wrote to memory of 2808 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 80 PID 2940 wrote to memory of 2808 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 80 PID 2940 wrote to memory of 2808 2940 BC8478F5CAA7B719234C8E1CF8395B12.tmp 80 PID 2808 wrote to memory of 2120 2808 driv.exe 81 PID 2808 wrote to memory of 2120 2808 driv.exe 81 PID 2808 wrote to memory of 2120 2808 driv.exe 81 PID 2120 wrote to memory of 644 2120 CCLI.exe 82 PID 2120 wrote to memory of 644 2120 CCLI.exe 82 PID 2120 wrote to memory of 644 2120 CCLI.exe 82 PID 644 wrote to memory of 212 644 cmd.exe 84 PID 644 wrote to memory of 212 644 cmd.exe 84 PID 644 wrote to memory of 212 644 cmd.exe 84 PID 212 wrote to memory of 2040 212 cmd.exe 85 PID 212 wrote to memory of 2040 212 cmd.exe 85 PID 212 wrote to memory of 2040 212 cmd.exe 85 PID 2808 wrote to memory of 688 2808 driv.exe 86 PID 2808 wrote to memory of 688 2808 driv.exe 86 PID 2808 wrote to memory of 688 2808 driv.exe 86 PID 688 wrote to memory of 3024 688 ref.exe 87 PID 688 wrote to memory of 3024 688 ref.exe 87 PID 688 wrote to memory of 3024 688 ref.exe 87 PID 212 wrote to memory of 4028 212 cmd.exe 89 PID 212 wrote to memory of 4028 212 cmd.exe 89 PID 212 wrote to memory of 4028 212 cmd.exe 89 PID 3024 wrote to memory of 2108 3024 cmd.exe 90 PID 3024 wrote to memory of 2108 3024 cmd.exe 90 PID 3024 wrote to memory of 2108 3024 cmd.exe 90 PID 2108 wrote to memory of 2308 2108 cmd.exe 91 PID 2108 wrote to memory of 2308 2108 cmd.exe 91 PID 2108 wrote to memory of 2308 2108 cmd.exe 91 PID 212 wrote to memory of 1408 212 cmd.exe 92 PID 212 wrote to memory of 1408 212 cmd.exe 92 PID 212 wrote to memory of 1408 212 cmd.exe 92 PID 4028 wrote to memory of 2200 4028 Velavi.exe.com 93 PID 4028 wrote to memory of 2200 4028 Velavi.exe.com 93 PID 4028 wrote to memory of 2200 4028 Velavi.exe.com 93 PID 2108 wrote to memory of 3064 2108 cmd.exe 94 PID 2108 wrote to memory of 3064 2108 cmd.exe 94 PID 2108 wrote to memory of 3064 2108 cmd.exe 94 PID 2108 wrote to memory of 2184 2108 cmd.exe 95 PID 2108 wrote to memory of 2184 2108 cmd.exe 95 PID 2108 wrote to memory of 2184 2108 cmd.exe 95 PID 3064 wrote to memory of 3468 3064 Rivederlo.exe.com 96 PID 3064 wrote to memory of 3468 3064 Rivederlo.exe.com 96 PID 3064 wrote to memory of 3468 3064 Rivederlo.exe.com 96 PID 2200 wrote to memory of 2008 2200 Velavi.exe.com 102 PID 2200 wrote to memory of 2008 2200 Velavi.exe.com 102 PID 2200 wrote to memory of 2008 2200 Velavi.exe.com 102 PID 2200 wrote to memory of 2008 2200 Velavi.exe.com 102 PID 2200 wrote to memory of 2008 2200 Velavi.exe.com 102 PID 3468 wrote to memory of 780 3468 Rivederlo.exe.com 104 PID 3468 wrote to memory of 780 3468 Rivederlo.exe.com 104 PID 3468 wrote to memory of 780 3468 Rivederlo.exe.com 104
Processes
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C:\Users\Admin\AppData\Local\Temp\BC8478F5CAA7B719234C8E1CF8395B12.exe"C:\Users\Admin\AppData\Local\Temp\BC8478F5CAA7B719234C8E1CF8395B12.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3944 -
C:\Users\Admin\AppData\Local\Temp\is-CM581.tmp\BC8478F5CAA7B719234C8E1CF8395B12.tmp"C:\Users\Admin\AppData\Local\Temp\is-CM581.tmp\BC8478F5CAA7B719234C8E1CF8395B12.tmp" /SL5="$5006A,10346497,792064,C:\Users\Admin\AppData\Local\Temp\BC8478F5CAA7B719234C8E1CF8395B12.exe"2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1916 -
C:\Users\Admin\AppData\Local\Temp\BC8478F5CAA7B719234C8E1CF8395B12.exe"C:\Users\Admin\AppData\Local\Temp\BC8478F5CAA7B719234C8E1CF8395B12.exe" /VERYSILENT3⤵
- Suspicious use of WriteProcessMemory
PID:4012 -
C:\Users\Admin\AppData\Local\Temp\is-8PL14.tmp\BC8478F5CAA7B719234C8E1CF8395B12.tmp"C:\Users\Admin\AppData\Local\Temp\is-8PL14.tmp\BC8478F5CAA7B719234C8E1CF8395B12.tmp" /SL5="$501E0,10346497,792064,C:\Users\Admin\AppData\Local\Temp\BC8478F5CAA7B719234C8E1CF8395B12.exe" /VERYSILENT4⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2940 -
C:\Program Files (x86)\My Program\SRBPolaris.exe"C:\Program Files (x86)\My Program\SRBPolaris.exe" C:\Program Files (x86)\My Program\SRBPolaris.exe5⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
PID:1960
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C:\Program Files (x86)\My Program\driv.exe"C:\Program Files (x86)\My Program\driv.exe" C:\Program Files (x86)\My Program\driv.exe5⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2808 -
C:\Users\Admin\AppData\Local\Temp\CCLI.exe"C:\Users\Admin\AppData\Local\Temp/CCLI.exe"6⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c cmd < Voi.dot7⤵
- Suspicious use of WriteProcessMemory
PID:644 -
C:\Windows\SysWOW64\cmd.execmd8⤵
- Suspicious use of WriteProcessMemory
PID:212 -
C:\Windows\SysWOW64\findstr.exefindstr /V /R "^HXrmvNHDBkDgGNeExKVqLRIadYrxdOqbTpPwxrWDCUKCBwsXIMZofaNQgKpnJhhNkuxvYqpdOabRuyQgGuLEOSoBcZMJUbTfHXscHUZICJzXUWJoTV$" Mano.dot9⤵PID:2040
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C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Velavi.exe.comVelavi.exe.com c9⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4028 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Velavi.exe.comC:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Velavi.exe.com c10⤵
- Executes dropped EXE
- Drops startup file
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2200 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\RegAsm.exeC:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\RegAsm.exe11⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2008
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 309⤵
- Runs ping.exe
PID:1408
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C:\Users\Admin\AppData\Local\Temp\ref.exe"C:\Users\Admin\AppData\Local\Temp/ref.exe"6⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:688 -
C:\Windows\SysWOW64\cmd.exe"C:\Windows\System32\cmd.exe" /c cmd < Corano.aifc7⤵
- Suspicious use of WriteProcessMemory
PID:3024 -
C:\Windows\SysWOW64\cmd.execmd8⤵
- Suspicious use of WriteProcessMemory
PID:2108 -
C:\Windows\SysWOW64\findstr.exefindstr /V /R "^LMdBvAYUmwcKFMhAjjYLBfAXPEJldHxpVjTUoafXpqEdNzGoOjdzbgUvjzMSROERGjPzTzsUXwCBKllvXAcrsqLHsbIPFbyxcMJAEhfxUcvcM$" Melagrani.aifc9⤵PID:2308
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C:\Users\Admin\AppData\Local\Temp\7ZipSfx.001\Rivederlo.exe.comRivederlo.exe.com A9⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:3064 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.001\Rivederlo.exe.comC:\Users\Admin\AppData\Local\Temp\7ZipSfx.001\Rivederlo.exe.com A10⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3468 -
C:\Users\Admin\AppData\Local\Temp\7ZipSfx.001\RegAsm.exeC:\Users\Admin\AppData\Local\Temp\7ZipSfx.001\RegAsm.exe11⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:780
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C:\Windows\SysWOW64\PING.EXEping 127.0.0.1 -n 309⤵
- Runs ping.exe
PID:2184
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