Analysis
-
max time kernel
148s -
max time network
151s -
platform
windows10_x64 -
resource
win10v200430 -
submitted
09-07-2020 15:10
Static task
static1
Behavioral task
behavioral1
Sample
update.dll
Resource
win7
General
-
Target
update.dll
-
Size
687KB
-
MD5
091e178212ae4001b17be1e1ef26d840
-
SHA1
26c32489c21cba335350eeca52e34a60d9b84290
-
SHA256
7267e26bc4f00c572c149b9bb891607624ef4d8314c7418228c8bccc5e7f7168
-
SHA512
6b61c5388b196fd07d0148b3e1b4ea8a71e256a00ed2ded20bc195c607006256de5988c5a4d33332f4b0ee3527e51d972eaa168c625e557828ebfff6ffbcf288
Malware Config
Extracted
trickbot
1000512
chil63
95.171.16.42:443
185.90.61.9:443
5.1.81.68:443
185.99.2.65:443
134.119.191.11:443
85.204.116.100:443
78.108.216.47:443
51.81.112.144:443
194.5.250.121:443
185.14.31.104:443
185.99.2.66:443
107.175.72.141:443
192.3.247.123:443
134.119.191.21:443
85.204.116.216:443
91.235.129.20:443
181.129.104.139:449
181.112.157.42:449
181.129.134.18:449
131.161.253.190:449
121.100.19.18:449
190.136.178.52:449
45.6.16.68:449
110.232.76.39:449
122.50.6.122:449
103.12.161.194:449
36.91.45.10:449
110.93.15.98:449
80.210.32.67:449
103.111.83.246:449
200.107.35.154:449
36.89.182.225:449
36.89.243.241:449
36.92.19.205:449
110.50.84.5:449
182.253.113.67:449
36.66.218.117:449
-
autorunName:pwgrab
Signatures
-
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1628 wrote to memory of 1720 1628 rundll32.exe rundll32.exe PID 1628 wrote to memory of 1720 1628 rundll32.exe rundll32.exe PID 1628 wrote to memory of 1720 1628 rundll32.exe rundll32.exe PID 1720 wrote to memory of 1972 1720 rundll32.exe wermgr.exe PID 1720 wrote to memory of 1972 1720 rundll32.exe wermgr.exe PID 1720 wrote to memory of 1972 1720 rundll32.exe wermgr.exe PID 1720 wrote to memory of 1972 1720 rundll32.exe wermgr.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
wermgr.exedescription pid process Token: SeDebugPrivilege 1972 wermgr.exe Token: SeDebugPrivilege 1972 wermgr.exe Token: SeDebugPrivilege 1972 wermgr.exe -
Templ.dll packer 2 IoCs
Detects Templ.dll packer which usually loads Trickbot.
Processes:
resource yara_rule behavioral2/memory/1720-1-0x0000000000780000-0x00000000007AE000-memory.dmp templ_dll behavioral2/memory/1720-2-0x0000000010000000-0x000000001002D000-memory.dmp templ_dll -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\update.dll,#11⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\update.dll,#12⤵
- Suspicious use of WriteProcessMemory
-
C:\Windows\system32\wermgr.exeC:\Windows\system32\wermgr.exe3⤵
- Suspicious use of AdjustPrivilegeToken