Analysis Overview
SHA256
d8e71f4f6c001ff40cdc03fff232d097a103a4413b8e74ecb9a333b8a2d6a436
Threat Level: Known bad
The file d8e71f4f6c001ff40cdc03fff232d097a103a4413b8e74ecb9a333b8a2d6a436 was found to be: Known bad.
Malicious Activity Summary
Formbook
Xloader
Xloader payload
Executes dropped EXE
Checks computer location settings
Reads user/profile data of web browsers
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Program Files directory
Enumerates physical storage devices
Program crash
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Modifies Internet Explorer settings
Suspicious behavior: MapViewOfSection
Suspicious behavior: GetForegroundWindowSpam
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2023-01-27 04:45
Signatures
Analysis: behavioral1
Detonation Overview
Submitted
2023-01-27 04:45
Reported
2023-01-27 04:47
Platform
win10-20220812-en
Max time kernel
149s
Max time network
148s
Command Line
Signatures
Formbook
Xloader
Xloader payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| N/A | N/A | C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-3844063266-715245855-4050956231-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
Reads user/profile data of web browsers
Adds Run key to start application
| Description | Indicator | Process | Target |
| Key created | \Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ZJO04ZIXVF = "C:\\Program Files (x86)\\Fvnu\\regsvcd8tpu.exe" | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1724 set thread context of 2772 | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe |
| PID 2772 set thread context of 3152 | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | C:\Windows\Explorer.EXE |
| PID 2772 set thread context of 3152 | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | C:\Windows\Explorer.EXE |
| PID 4176 set thread context of 3152 | N/A | C:\Windows\SysWOW64\rundll32.exe | C:\Windows\Explorer.EXE |
Drops file in Program Files directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe | C:\Windows\SysWOW64\rundll32.exe | N/A |
| File opened for modification | C:\Program Files (x86)\Fvnu | C:\Windows\Explorer.EXE | N/A |
| File created | C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe | C:\Windows\Explorer.EXE | N/A |
| File opened for modification | C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe | C:\Windows\Explorer.EXE | N/A |
Enumerates physical storage devices
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe |
Modifies Internet Explorer settings
| Description | Indicator | Process | Target |
| Key created | \Registry\User\S-1-5-21-3844063266-715245855-4050956231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\Explorer.EXE | N/A |
Suspicious behavior: MapViewOfSection
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\rundll32.exe | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\Explorer.EXE | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\Explorer.EXE | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\Explorer.EXE | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\Explorer.EXE | N/A |
| Token: SeShutdownPrivilege | N/A | C:\Windows\Explorer.EXE | N/A |
| Token: SeCreatePagefilePrivilege | N/A | C:\Windows\Explorer.EXE | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
C:\Users\Admin\AppData\Local\Temp\d8e71f4f6c001ff40cdc03fff232d097a103a4413b8e74ecb9a333b8a2d6a436.exe
"C:\Users\Admin\AppData\Local\Temp\d8e71f4f6c001ff40cdc03fff232d097a103a4413b8e74ecb9a333b8a2d6a436.exe"
C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe
"C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe" C:\Users\Admin\AppData\Local\Temp\guiaopyy.j
C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe
"C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe"
C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.exe"
C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe"
C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe
"C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4724 -s 532
Network
| Country | Destination | Domain | Proto |
| N/A | 8.8.8.8:53 | www.648t.com | udp |
| N/A | 38.54.132.94:80 | www.648t.com | tcp |
| N/A | 8.8.8.8:53 | www.niply.space | udp |
| N/A | 64.190.63.111:80 | www.niply.space | tcp |
| N/A | 8.8.8.8:53 | www.crimsonnight.org | udp |
| N/A | 34.117.168.233:80 | www.crimsonnight.org | tcp |
| N/A | 8.8.8.8:53 | www.asu4tqr.icu | udp |
| N/A | 38.85.254.111:80 | www.asu4tqr.icu | tcp |
| N/A | 8.8.8.8:53 | www.peiphitan.com | udp |
| N/A | 192.64.115.133:80 | www.peiphitan.com | tcp |
| N/A | 8.8.8.8:53 | www.advancedsurgery.xyz | udp |
| N/A | 3.64.163.50:80 | www.advancedsurgery.xyz | tcp |
| N/A | 3.64.163.50:80 | www.advancedsurgery.xyz | tcp |
| N/A | 8.8.8.8:53 | www.autarbazar.xyz | udp |
| N/A | 198.54.115.141:80 | www.autarbazar.xyz | tcp |
| N/A | 198.54.115.141:80 | www.autarbazar.xyz | tcp |
| N/A | 8.8.8.8:53 | www.midundao.net | udp |
| N/A | 172.247.35.173:80 | www.midundao.net | tcp |
| N/A | 172.247.35.173:80 | www.midundao.net | tcp |
| N/A | 8.8.8.8:53 | www.bayuerlangga.com | udp |
| N/A | 203.175.9.15:80 | www.bayuerlangga.com | tcp |
| N/A | 203.175.9.15:80 | www.bayuerlangga.com | tcp |
| N/A | 8.8.8.8:53 | www.jojooo.xyz | udp |
| N/A | 8.8.8.8:53 | www.jojooo.xyz | udp |
| N/A | 8.8.8.8:53 | www.drzjup.space | udp |
| N/A | 172.255.33.179:80 | www.drzjup.space | tcp |
| N/A | 172.255.33.179:80 | www.drzjup.space | tcp |
| N/A | 8.8.8.8:53 | www.webbestsec.online | udp |
| N/A | 2.57.90.16:80 | www.webbestsec.online | tcp |
| N/A | 2.57.90.16:80 | www.webbestsec.online | tcp |
| N/A | 8.8.8.8:53 | www.kcgjz.top | udp |
| N/A | 188.114.96.0:80 | www.kcgjz.top | tcp |
| N/A | 188.114.96.0:80 | www.kcgjz.top | tcp |
| N/A | 8.8.8.8:53 | www.orange-foam.com | udp |
| N/A | 3.74.205.160:80 | www.orange-foam.com | tcp |
| N/A | 3.74.205.160:80 | www.orange-foam.com | tcp |
| N/A | 8.8.8.8:53 | www.hollandshirt.online | udp |
| N/A | 185.104.28.238:80 | www.hollandshirt.online | tcp |
| N/A | 185.104.28.238:80 | www.hollandshirt.online | tcp |
| N/A | 172.247.35.173:80 | www.midundao.net | tcp |
| N/A | 8.8.8.8:53 | www.gaymusclebigblackd.site | udp |
| N/A | 8.8.8.8:53 | www.anaygus.com | udp |
| N/A | 72.167.68.223:80 | www.anaygus.com | tcp |
| N/A | 72.167.68.223:80 | www.anaygus.com | tcp |
| N/A | 8.8.8.8:53 | www.pmtj013.xyz | udp |
Files
memory/2248-118-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-119-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-120-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-121-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-122-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-123-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-124-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-125-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-126-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-127-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-128-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-129-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-130-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-131-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-132-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-133-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-134-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-135-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-136-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-137-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-138-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-140-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-141-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-142-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-145-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-146-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-147-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-148-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-144-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-150-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-152-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-154-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-156-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-158-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-160-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-159-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-157-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-155-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-153-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-151-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-149-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-143-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-139-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-161-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-162-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-163-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/2248-164-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-167-0x00000000779B0000-0x0000000077B3E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe
| MD5 | 85af329a0a06c1401e60a9c02d060948 |
| SHA1 | d83acc707040401fe1d88570608e8e8f05589944 |
| SHA256 | 79d7f5eafd50ad73831ca1706f15d0c5e4c49f1586c1c67d8e8d593615282e1d |
| SHA512 | f13fd7090a6014f6920926fd38ce582fbd7c1a9a201ee5e97fc9731e5d7943f53bd43e0dd7fafcdb2b8004c48ec53144e41d754be814850c34dfa15e8ea69b66 |
memory/1724-168-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-165-0x0000000000000000-mapping.dmp
memory/1724-169-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-170-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-171-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-172-0x00000000779B0000-0x0000000077B3E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe
| MD5 | 85af329a0a06c1401e60a9c02d060948 |
| SHA1 | d83acc707040401fe1d88570608e8e8f05589944 |
| SHA256 | 79d7f5eafd50ad73831ca1706f15d0c5e4c49f1586c1c67d8e8d593615282e1d |
| SHA512 | f13fd7090a6014f6920926fd38ce582fbd7c1a9a201ee5e97fc9731e5d7943f53bd43e0dd7fafcdb2b8004c48ec53144e41d754be814850c34dfa15e8ea69b66 |
memory/1724-174-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-175-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-176-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-177-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-178-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-179-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-180-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-181-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-183-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-182-0x00000000779B0000-0x0000000077B3E000-memory.dmp
memory/1724-184-0x00000000779B0000-0x0000000077B3E000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\guiaopyy.j
| MD5 | 7dd82af1732e277c64b7f580fb68b3f8 |
| SHA1 | 7f1cac07464b57d03eeba50d4371a6fbcaff1798 |
| SHA256 | 237438a1c80ff20bb45e9a0b804322f2a3527f849bef2aaf406d18c189a44c0b |
| SHA512 | 0a675216d4e0a03165c3f3d11cd3d125b31624d93e4a901799b3066e691fc7dbf81aed86bea23e3167d230d880682c814b77e219f471ad770a43a28a1d496207 |
C:\Users\Admin\AppData\Local\Temp\lufvp.o
| MD5 | a69fcb977745da1e8892aed65f6a5a89 |
| SHA1 | 32b35f70fc0d3686ea4ffc26f70c80a8ede70474 |
| SHA256 | 108668a80bdff8cc56a95903d011d86410054cadbd4f52530a0ff9f4c0f0e24b |
| SHA512 | 21badfef569bfebcabf03ef5ab6061b4c723b241ccf69ff67ad5649ee1dda08b1bb99f43de0b43687841274356dafbe67a799c4cead6dd15309845c253e6a508 |
memory/2772-209-0x000000000041FF10-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\kyfhnzgx.exe
| MD5 | 85af329a0a06c1401e60a9c02d060948 |
| SHA1 | d83acc707040401fe1d88570608e8e8f05589944 |
| SHA256 | 79d7f5eafd50ad73831ca1706f15d0c5e4c49f1586c1c67d8e8d593615282e1d |
| SHA512 | f13fd7090a6014f6920926fd38ce582fbd7c1a9a201ee5e97fc9731e5d7943f53bd43e0dd7fafcdb2b8004c48ec53144e41d754be814850c34dfa15e8ea69b66 |
memory/2772-216-0x0000000000400000-0x000000000042C000-memory.dmp
memory/2772-232-0x0000000000A00000-0x0000000000D20000-memory.dmp
memory/2772-233-0x0000000000870000-0x0000000000A00000-memory.dmp
memory/3152-234-0x0000000005FE0000-0x000000000610D000-memory.dmp
memory/2772-235-0x0000000002770000-0x0000000002781000-memory.dmp
memory/3152-236-0x00000000061E0000-0x0000000006337000-memory.dmp
memory/4176-237-0x0000000000000000-mapping.dmp
memory/2772-240-0x0000000000400000-0x000000000042C000-memory.dmp
memory/3816-278-0x0000000000000000-mapping.dmp
memory/4176-285-0x00000000001B0000-0x00000000001DC000-memory.dmp
memory/4176-284-0x0000000000B80000-0x0000000000B93000-memory.dmp
memory/4176-286-0x00000000042D0000-0x00000000045F0000-memory.dmp
memory/4176-288-0x0000000003FA0000-0x000000000412D000-memory.dmp
memory/3152-289-0x00000000063E0000-0x0000000006517000-memory.dmp
memory/4176-290-0x00000000001B0000-0x00000000001DC000-memory.dmp
memory/4176-291-0x0000000003FA0000-0x000000000412D000-memory.dmp
memory/3152-292-0x00000000063E0000-0x0000000006517000-memory.dmp
memory/4084-314-0x0000000000000000-mapping.dmp
C:\Users\Admin\AppData\Local\Temp\DB1
| MD5 | b608d407fc15adea97c26936bc6f03f6 |
| SHA1 | 953e7420801c76393902c0d6bb56148947e41571 |
| SHA256 | b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf |
| SHA512 | cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4 |
memory/4724-331-0x0000000000000000-mapping.dmp
C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe
| MD5 | 85af329a0a06c1401e60a9c02d060948 |
| SHA1 | d83acc707040401fe1d88570608e8e8f05589944 |
| SHA256 | 79d7f5eafd50ad73831ca1706f15d0c5e4c49f1586c1c67d8e8d593615282e1d |
| SHA512 | f13fd7090a6014f6920926fd38ce582fbd7c1a9a201ee5e97fc9731e5d7943f53bd43e0dd7fafcdb2b8004c48ec53144e41d754be814850c34dfa15e8ea69b66 |
C:\Program Files (x86)\Fvnu\regsvcd8tpu.exe
| MD5 | 85af329a0a06c1401e60a9c02d060948 |
| SHA1 | d83acc707040401fe1d88570608e8e8f05589944 |
| SHA256 | 79d7f5eafd50ad73831ca1706f15d0c5e4c49f1586c1c67d8e8d593615282e1d |
| SHA512 | f13fd7090a6014f6920926fd38ce582fbd7c1a9a201ee5e97fc9731e5d7943f53bd43e0dd7fafcdb2b8004c48ec53144e41d754be814850c34dfa15e8ea69b66 |