f6a307d243c407c27489de37adac83e9205be531cbb4e2cb71545627faf813fd

Resubmissions

11-01-2021 13:09

210111-dlhjyngw66 8

11-01-2021 07:36

210111-xfhgmxjy6n 10

Analysis

max time kernel
241s
max time network
240s
platform
windows7_x64
resource
win7v20201028
submitted
11-01-2021 13:09

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General

Target

4ced2056e4efe1c93b9f4adaaeaba20c.exe
Size

607KB
MD5

4ced2056e4efe1c93b9f4adaaeaba20c
SHA1

b975777c42d7d8fb04c34a2efc64dc5e4c574712
SHA256

f6a307d243c407c27489de37adac83e9205be531cbb4e2cb71545627faf813fd
SHA512

014df0ad54bf23335f964fa4e313a91b60b3ea2c62b73a306e973177830b573666aaebc1932cafa766042f34b8e32adcfabe3027aae2cc09341fd138a8963eaf

Score

8^/10

evasion

Malware Config

Signatures

Disables Task Manager via registry modification
evasion
Executes dropped EXE 3 IoCs

Processes:

HoykwG9pmLZ7sZbSP8eb.exewinrar-x84.exeWmiPrvSE.exe

pid process

1768 HoykwG9pmLZ7sZbSP8eb.exe
952 winrar-x84.exe
1224 WmiPrvSE.exe
Loads dropped DLL 2 IoCs

Processes:

cmd.execmd.exe

pid process

1988 cmd.exe
692 cmd.exe

pid	process
1768	HoykwG9pmLZ7sZbSP8eb.exe
952	winrar-x84.exe
1224	WmiPrvSE.exe

pid	process
1988	cmd.exe
692	cmd.exe

Drops file in Program Files directory 2 IoCs

Processes:

winrar-x84.exe

description	ioc	process
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\WmiPrvSE.exe	winrar-x84.exe
File created	C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\24dbde2999530ef5fd907494bc374d663924116c	winrar-x84.exe

Drops file in Windows directory 2 IoCs

Processes:

winrar-x84.exe

description	ioc	process
File created	C:\Windows\Downloaded Program Files\taskhost.exe	winrar-x84.exe
File created	C:\Windows\Downloaded Program Files\b75386f1303e64d8139363b71e44ac16341adf4e	winrar-x84.exe

Creates scheduled task(s) 1 TTPs 7 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exeschtasks.exe

pid process

1140 schtasks.exe
1996 schtasks.exe
1236 schtasks.exe
1712 schtasks.exe
308 schtasks.exe
1616 schtasks.exe
1228 schtasks.exe
Modifies registry key 1 TTPs 1 IoCs

Modify Registry
T1112

Processes:

reg.exe

pid process

1524 reg.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

winrar-x84.exeWmiPrvSE.exe

pid process

952 winrar-x84.exe
1224 WmiPrvSE.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

winrar-x84.exeWmiPrvSE.exe

description pid process

Token: SeDebugPrivilege 952 winrar-x84.exe
Token: SeDebugPrivilege 1224 WmiPrvSE.exe

pid	process
1140	schtasks.exe
1996	schtasks.exe
1236	schtasks.exe
1712	schtasks.exe
308	schtasks.exe
1616	schtasks.exe
1228	schtasks.exe

pid	process
1524	reg.exe

pid	process
952	winrar-x84.exe
1224	WmiPrvSE.exe

description	pid	process
Token: SeDebugPrivilege	952	winrar-x84.exe
Token: SeDebugPrivilege	1224	WmiPrvSE.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

4ced2056e4efe1c93b9f4adaaeaba20c.exeWScript.execmd.exeHoykwG9pmLZ7sZbSP8eb.exeWScript.execmd.exewinrar-x84.exe

description	pid	process	target process
PID 1660 wrote to memory of 1248	1660	4ced2056e4efe1c93b9f4adaaeaba20c.exe	WScript.exe
PID 1660 wrote to memory of 1248	1660	4ced2056e4efe1c93b9f4adaaeaba20c.exe	WScript.exe
PID 1660 wrote to memory of 1248	1660	4ced2056e4efe1c93b9f4adaaeaba20c.exe	WScript.exe
PID 1660 wrote to memory of 1248	1660	4ced2056e4efe1c93b9f4adaaeaba20c.exe	WScript.exe
PID 1248 wrote to memory of 1988	1248	WScript.exe	cmd.exe
PID 1248 wrote to memory of 1988	1248	WScript.exe	cmd.exe
PID 1248 wrote to memory of 1988	1248	WScript.exe	cmd.exe
PID 1248 wrote to memory of 1988	1248	WScript.exe	cmd.exe
PID 1988 wrote to memory of 1768	1988	cmd.exe	HoykwG9pmLZ7sZbSP8eb.exe
PID 1988 wrote to memory of 1768	1988	cmd.exe	HoykwG9pmLZ7sZbSP8eb.exe
PID 1988 wrote to memory of 1768	1988	cmd.exe	HoykwG9pmLZ7sZbSP8eb.exe
PID 1988 wrote to memory of 1768	1988	cmd.exe	HoykwG9pmLZ7sZbSP8eb.exe
PID 1768 wrote to memory of 1524	1768	HoykwG9pmLZ7sZbSP8eb.exe	WScript.exe
PID 1768 wrote to memory of 1524	1768	HoykwG9pmLZ7sZbSP8eb.exe	WScript.exe
PID 1768 wrote to memory of 1524	1768	HoykwG9pmLZ7sZbSP8eb.exe	WScript.exe
PID 1768 wrote to memory of 1524	1768	HoykwG9pmLZ7sZbSP8eb.exe	WScript.exe
PID 1524 wrote to memory of 692	1524	WScript.exe	cmd.exe
PID 1524 wrote to memory of 692	1524	WScript.exe	cmd.exe
PID 1524 wrote to memory of 692	1524	WScript.exe	cmd.exe
PID 1524 wrote to memory of 692	1524	WScript.exe	cmd.exe
PID 692 wrote to memory of 952	692	cmd.exe	winrar-x84.exe
PID 692 wrote to memory of 952	692	cmd.exe	winrar-x84.exe
PID 692 wrote to memory of 952	692	cmd.exe	winrar-x84.exe
PID 692 wrote to memory of 952	692	cmd.exe	winrar-x84.exe
PID 952 wrote to memory of 308	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 308	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 308	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1616	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1616	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1616	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1228	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1228	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1228	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1140	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1140	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1140	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1996	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1996	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1996	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1236	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1236	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1236	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1712	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1712	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1712	952	winrar-x84.exe	schtasks.exe
PID 952 wrote to memory of 1224	952	winrar-x84.exe	WmiPrvSE.exe
PID 952 wrote to memory of 1224	952	winrar-x84.exe	WmiPrvSE.exe
PID 952 wrote to memory of 1224	952	winrar-x84.exe	WmiPrvSE.exe
PID 692 wrote to memory of 1524	692	cmd.exe	reg.exe
PID 692 wrote to memory of 1524	692	cmd.exe	reg.exe
PID 692 wrote to memory of 1524	692	cmd.exe	reg.exe
PID 692 wrote to memory of 1524	692	cmd.exe	reg.exe

C:\Users\Admin\AppData\Local\Temp\4ced2056e4efe1c93b9f4adaaeaba20c.exe
"C:\Users\Admin\AppData\Local\Temp\4ced2056e4efe1c93b9f4adaaeaba20c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\WinRAR\wSmIzsMZSTGIPjXygtTeiEZYkIjJjD.vbe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1248

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Roaming\WinRAR\wAcLjfo4uMcnTa1rAjnz0eLcoo04D9.bat" "
3⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1988

C:\Users\Admin\AppData\Roaming\WinRAR\HoykwG9pmLZ7sZbSP8eb.exe
HoykwG9pmLZ7sZbSP8eb.exe -p2e840a597483ac4423c7c5ec1a09b39042cbf75d
4⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1768

C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\WinRAR\tPKG2uMJtmCS4Bv6TMepBvdoqxAPGa.vbe"
5⤵
- Suspicious use of WriteProcessMemory
PID:1524

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Roaming\WinRAR\mQE440b4P9lIBPO3Qboqf8inqaQoJr.bat" "
6⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:692

C:\Users\Admin\AppData\Roaming\WinRAR\winrar-x84.exe
"C:\Users\Admin\AppData\Roaming\WinRAR\winrar-x84.exe"
7⤵
- Executes dropped EXE
- Drops file in Program Files directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:952

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "explorer" /sc ONLOGON /tr "'C:\Recovery\a7611f42-198c-11eb-8a49-ee401b9e63cb\explorer.exe'" /rl HIGHEST /f
8⤵
- Creates scheduled task(s)
PID:308

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "smss" /sc ONLOGON /tr "'C:\PerfLogs\Admin\smss.exe'" /rl HIGHEST /f
8⤵
- Creates scheduled task(s)
PID:1616

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "taskhost" /sc ONLOGON /tr "'C:\Windows\Downloaded Program Files\taskhost.exe'" /rl HIGHEST /f
8⤵
- Creates scheduled task(s)
PID:1228

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "spoolsv" /sc ONLOGON /tr "'C:\Documents and Settings\spoolsv.exe'" /rl HIGHEST /f
8⤵
- Creates scheduled task(s)
PID:1140

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "winrar-x84" /sc ONLOGON /tr "'C:\ProgramData\Favorites\winrar-x84.exe'" /rl HIGHEST /f
8⤵
- Creates scheduled task(s)
PID:1996

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "winrar-x84" /sc ONLOGON /tr "'C:\Recovery\a7611f42-198c-11eb-8a49-ee401b9e63cb\winrar-x84.exe'" /rl HIGHEST /f
8⤵
- Creates scheduled task(s)
PID:1236

C:\Windows\system32\schtasks.exe
"schtasks" /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\WmiPrvSE.exe'" /rl HIGHEST /f
8⤵
- Creates scheduled task(s)
PID:1712

C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\WmiPrvSE.exe
"C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\WmiPrvSE.exe"
8⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1224

C:\Windows\SysWOW64\reg.exe
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
7⤵
- Modifies registry key
PID:1524

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\WmiPrvSE.exe
MD5
bb15e4323d2b8ce4bb903b05c7b45562

SHA1
c596278a1c30c1c68577c421fbdd21a672cb3622

SHA256
808ccc6e8d8a46dc73a6c18326fd3f484eb8bf52c78602092d1be0c851bc0372

SHA512
f630375b4cc2f4b25c977334d6f90462f6c6f897df2d8bd887f0d9f5e622877fb7f280fda7c5add4d95cd1bef600b060c4bc38780c7c201188f8c0f5a20f5a1f

Download Submit
C:\Program Files\MSBuild\Microsoft\Windows Workflow Foundation\v3.0\WmiPrvSE.exe
MD5
bb15e4323d2b8ce4bb903b05c7b45562

SHA1
c596278a1c30c1c68577c421fbdd21a672cb3622

SHA256
808ccc6e8d8a46dc73a6c18326fd3f484eb8bf52c78602092d1be0c851bc0372

SHA512
f630375b4cc2f4b25c977334d6f90462f6c6f897df2d8bd887f0d9f5e622877fb7f280fda7c5add4d95cd1bef600b060c4bc38780c7c201188f8c0f5a20f5a1f

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\HoykwG9pmLZ7sZbSP8eb.exe
MD5
92066cc64fbbdc6d4a1b0293f80b2bdd

SHA1
ffa822f85e5d87ea90b8572bbb1bac8c1859b7e0

SHA256
c5d5173a31a341be6e07f90434b2ca20c6d148668ac5c26ea2ecfa200e59e40d

SHA512
0e9fda642e6a56567f1304e93e27b6b82da035aa6e992aaf4691e2879af043178765407452adf775309d08749014e2a6ed3f49a588ed3e855fd261d0749c0104

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\HoykwG9pmLZ7sZbSP8eb.exe
MD5
92066cc64fbbdc6d4a1b0293f80b2bdd

SHA1
ffa822f85e5d87ea90b8572bbb1bac8c1859b7e0

SHA256
c5d5173a31a341be6e07f90434b2ca20c6d148668ac5c26ea2ecfa200e59e40d

SHA512
0e9fda642e6a56567f1304e93e27b6b82da035aa6e992aaf4691e2879af043178765407452adf775309d08749014e2a6ed3f49a588ed3e855fd261d0749c0104

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\mQE440b4P9lIBPO3Qboqf8inqaQoJr.bat
MD5
ed2715cde51a566a09ffc2b014c19151

SHA1
f4c12f15a573acebc744a615a8fed1fcb6ce63fb

SHA256
314aaf622368833d4d7c1dc9810a68990783fe71f77ff398183b750c97a9d1b2

SHA512
015832bd16f920e2f58388d8017a13bcc70d1a128dd03b77e50ab76c6450e9d211a6c54c39913e55ab206b791bebf06bb0207d8e7cb508bef495073508b91de5

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\tPKG2uMJtmCS4Bv6TMepBvdoqxAPGa.vbe
MD5
753c5cefa9d71892e70c2698575acb20

SHA1
38c83d89b6c2f166009bbbfb90e483c0053b6450

SHA256
5b81eb6d542e036272f8c3e02d72a0080be8d31b6c821534568fe6b7f7581d28

SHA512
bc964ed6522b2647575a149329a4ee02cfd54ab964f43747b8fe7d4d615701fc394b99feac16b6d4da6c7dfd6405726386841912d2c38767b9db375c13a86ee9

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\wAcLjfo4uMcnTa1rAjnz0eLcoo04D9.bat
MD5
ce75cfe3a73c8e92c7dbfbc4c945990f

SHA1
da5cbaa82e1c622b29c5971dd299345c1a1274fa

SHA256
be4233a3fb0da15811de2c98fa0c58e60e2af7b98cb449107a198b4167665aef

SHA512
c678ac1d8dccc210e40d02dab9dd7c217e7a36a0e46dd82197dcada4b4b2e3511b6a7ea274936dea1a66de7778608ac2bcaf0dabb3e876a32ea3b21247018d01

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\wSmIzsMZSTGIPjXygtTeiEZYkIjJjD.vbe
MD5
22382236eed1791830d2cb491490686b

SHA1
5927c6f2246eb952efa44d42b7e3e68acdb5d097

SHA256
ba2d08aeb026be4ea0b2ce2e69d77493daf7c111bb1e3ee44e18028df898092f

SHA512
c0bbb9d2f64b0d084b61f94075dc45a612a871676b291d960d2639fec6aa7f4e078411fb50738aa4d515bdb6bab709e323e268ac26d8905a5ae6a6ffe582e94d

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\winrar-x84.exe
MD5
bb15e4323d2b8ce4bb903b05c7b45562

SHA1
c596278a1c30c1c68577c421fbdd21a672cb3622

SHA256
808ccc6e8d8a46dc73a6c18326fd3f484eb8bf52c78602092d1be0c851bc0372

SHA512
f630375b4cc2f4b25c977334d6f90462f6c6f897df2d8bd887f0d9f5e622877fb7f280fda7c5add4d95cd1bef600b060c4bc38780c7c201188f8c0f5a20f5a1f

Download Submit
C:\Users\Admin\AppData\Roaming\WinRAR\winrar-x84.exe
MD5
bb15e4323d2b8ce4bb903b05c7b45562

SHA1
c596278a1c30c1c68577c421fbdd21a672cb3622

SHA256
808ccc6e8d8a46dc73a6c18326fd3f484eb8bf52c78602092d1be0c851bc0372

SHA512
f630375b4cc2f4b25c977334d6f90462f6c6f897df2d8bd887f0d9f5e622877fb7f280fda7c5add4d95cd1bef600b060c4bc38780c7c201188f8c0f5a20f5a1f

Download Submit
\Users\Admin\AppData\Roaming\WinRAR\HoykwG9pmLZ7sZbSP8eb.exe
MD5
92066cc64fbbdc6d4a1b0293f80b2bdd

SHA1
ffa822f85e5d87ea90b8572bbb1bac8c1859b7e0

SHA256
c5d5173a31a341be6e07f90434b2ca20c6d148668ac5c26ea2ecfa200e59e40d

SHA512
0e9fda642e6a56567f1304e93e27b6b82da035aa6e992aaf4691e2879af043178765407452adf775309d08749014e2a6ed3f49a588ed3e855fd261d0749c0104

Download Submit
\Users\Admin\AppData\Roaming\WinRAR\winrar-x84.exe
MD5
bb15e4323d2b8ce4bb903b05c7b45562

SHA1
c596278a1c30c1c68577c421fbdd21a672cb3622

SHA256
808ccc6e8d8a46dc73a6c18326fd3f484eb8bf52c78602092d1be0c851bc0372

SHA512
f630375b4cc2f4b25c977334d6f90462f6c6f897df2d8bd887f0d9f5e622877fb7f280fda7c5add4d95cd1bef600b060c4bc38780c7c201188f8c0f5a20f5a1f

Download Submit
memory/308-23-0x0000000000000000-mapping.dmp

Download
memory/692-14-0x0000000000000000-mapping.dmp

Download
memory/952-20-0x000007FEF4D10000-0x000007FEF56FC000-memory.dmp

Filesize
9.9MB

Download
memory/952-17-0x0000000000000000-mapping.dmp

Download
memory/952-21-0x00000000000A0000-0x00000000000A1000-memory.dmp

Filesize
4KB

Download
memory/1140-26-0x0000000000000000-mapping.dmp

Download
memory/1224-30-0x0000000000000000-mapping.dmp

Download
memory/1224-34-0x0000000000D40000-0x0000000000D41000-memory.dmp

Filesize
4KB

Download
memory/1224-33-0x000007FEF4D10000-0x000007FEF56FC000-memory.dmp

Filesize
9.9MB

Download
memory/1228-25-0x0000000000000000-mapping.dmp

Download
memory/1236-28-0x0000000000000000-mapping.dmp

Download
memory/1248-2-0x0000000000000000-mapping.dmp

Download
memory/1248-6-0x0000000002790000-0x0000000002794000-memory.dmp

Filesize
16KB

Download
memory/1524-11-0x0000000000000000-mapping.dmp

Download
memory/1524-15-0x0000000002630000-0x0000000002634000-memory.dmp

Filesize
16KB

Download
memory/1524-36-0x0000000000000000-mapping.dmp

Download
memory/1616-24-0x0000000000000000-mapping.dmp

Download
memory/1712-29-0x0000000000000000-mapping.dmp

Download
memory/1768-9-0x0000000000000000-mapping.dmp

Download
memory/1988-5-0x0000000000000000-mapping.dmp

Download
memory/1996-27-0x0000000000000000-mapping.dmp

Download