Threat name:
AsyncRAT Djvu RedLine SmokeLoader Tofsee
Alert
Classification:
rans.troj.spyw.evad
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for dropped file
Antivirus detection for URL or domain
Benign windows process drops PE files
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Checks if the current machine is a virtual machine (disk enumeration)
Contains functionality to inject code into remote processes
Creates a thread in another existing process (thread injection)
Creates an undocumented autostart registry key
Deletes itself after installation
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Drops executables to the windows directory (C:\Windows) and starts them
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
Modifies the windows firewall
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
PE file has nameless sections
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive disk information (via WMI, Win32_DiskDrive, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Suspect Svchost Activity
Sigma detected: Suspicious MSHTA Process Patterns
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: Suspicious Svchost Process
Sigma detected: WScript or CScript Dropper
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect sandboxes and other dynamic analysis tools (window names)
Tries to evade analysis by execution special instruction which cause usermode exception
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected Djvu Ransomware
Yara detected RedLine Stealer
Yara detected SmokeLoader
Yara detected Vidar stealer
behaviorgraph
top1
dnsIp2
2
Behavior Graph
ID:
529602
Sample:
LqESfLRNgh.exe
Startdate:
27/11/2021
Architecture:
WINDOWS
Score:
100
96
api.2ip.ua
77.123.139.190, 443, 49877
VOLIA-ASUA
Ukraine
2->96
98
mstdn.social
116.202.14.219, 443, 49883
HETZNER-ASDE
Germany
2->98
100
3 other IPs or domains
2->100
142
Multi AV Scanner detection
for domain / URL
2->142
144
Antivirus detection
for URL or domain
2->144
146
Antivirus detection
for dropped file
2->146
148
24 other signatures
2->148
11
LqESfLRNgh.exe
2->11
started
14
nxcpwrqf.exe
2->14
started
16
tcetbdc
2->16
started
18
3 other processes
2->18
signatures3
process4
signatures5
160
Contains functionality
to inject code into
remote processes
11->160
162
Injects a PE file into
a foreign processes
11->162
20
LqESfLRNgh.exe
11->20
started
164
Detected unpacking (changes
PE section rights)
14->164
166
Detected unpacking (overwrites
its own PE header)
14->166
168
Writes to foreign memory
regions
14->168
170
Allocates memory in
foreign processes
14->170
23
svchost.exe
14->23
started
172
Machine Learning detection
for dropped file
16->172
26
tcetbdc
16->26
started
process6
dnsIp7
150
Checks for kernel code
integrity (NtQuerySystemInformation(CodeIntegrityInformation))
20->150
152
Maps a DLL or memory
area into another process
20->152
154
Checks if the current
machine is a virtual
machine (disk enumeration)
20->154
156
Creates a thread in
another existing process
(thread injection)
20->156
28
explorer.exe
16
20->28
injected
104
quadoil.ru
85.143.175.153, 443, 49829, 49879
TRADERSOFTRU
Russian Federation
23->104
106
microsoft-com.mail.protection.outlook.com
40.93.207.1, 25, 49822
MICROSOFT-CORP-MSN-AS-BLOCKUS
United States
23->106
158
System process connects
to network (likely due
to code injection or
exploit)
23->158
signatures8
process9
dnsIp10
110
185.233.81.115, 443, 49799
SUPERSERVERSDATACENTERRU
Russian Federation
28->110
112
192.162.246.70, 49777, 80
DATACHEAP-LLC-ASRU
Russian Federation
28->112
114
9 other IPs or domains
28->114
88
C:\Users\user\AppData\Roaming\tcetbdc, PE32
28->88
dropped
90
C:\Users\user\AppData\Roaming\sietbdc, PE32
28->90
dropped
92
C:\Users\user\AppData\Local\Temp\FD09.exe, PE32
28->92
dropped
94
11 other malicious files
28->94
dropped
174
System process connects
to network (likely due
to code injection or
exploit)
28->174
176
Benign windows process
drops PE files
28->176
178
Deletes itself after
installation
28->178
180
Hides that the sample
has been downloaded
from the Internet (zone.identifier)
28->180
33
AE4.exe
28->33
started
37
DD7.exe
2
28->37
started
39
377A.exe
28->39
started
41
4 other processes
28->41
file11
signatures12
process13
dnsIp14
72
C:\Users\user\AppData\...\LbfoAdmin.exe, PE32
33->72
dropped
74
C:\Users\user\...\Aonjqeqpobotbuyred.exe, PE32
33->74
dropped
76
C:\Users\user\...\Spgpmxgqeumbkyvalxt.vbs, ASCII
33->76
dropped
78
C:\Users\user\AppData\Local\Temp\RegAsm.exe, PE32
33->78
dropped
116
Antivirus detection
for dropped file
33->116
118
Multi AV Scanner detection
for dropped file
33->118
120
Creates an undocumented
autostart registry key
33->120
134
2 other signatures
33->134
80
C:\Users\user\AppData\Local\...\nxcpwrqf.exe, PE32
37->80
dropped
122
Detected unpacking (changes
PE section rights)
37->122
124
Detected unpacking (overwrites
its own PE header)
37->124
126
Machine Learning detection
for dropped file
37->126
136
2 other signatures
37->136
44
cmd.exe
1
37->44
started
47
netsh.exe
3
37->47
started
49
cmd.exe
2
37->49
started
58
3 other processes
37->58
138
4 other signatures
39->138
108
file-file-host4.com
41->108
82
C:\Users\user\AppData\...\sqlite3[1].dll, PE32
41->82
dropped
84
C:\ProgramData\sqlite3.dll, PE32
41->84
dropped
128
Queries sensitive video
device information (via
WMI, Win32_VideoController,
often done to detect
virtual machines)
41->128
130
Tries to detect sandboxes
and other dynamic analysis
tools (window names)
41->130
132
Queries sensitive disk
information (via WMI,
Win32_DiskDrive, often
done to detect virtual
machines)
41->132
140
4 other signatures
41->140
51
2866.exe
41->51
started
54
conhost.exe
41->54
started
56
2866.exe
41->56
started
file15
signatures16
process17
dnsIp18
86
C:\Windows\SysWOW64\...\nxcpwrqf.exe (copy), PE32
44->86
dropped
60
conhost.exe
44->60
started
62
conhost.exe
47->62
started
64
conhost.exe
49->64
started
102
185.159.80.90, 38655, 49872
HOSTING-SOLUTIONSUS
Netherlands
51->102
66
conhost.exe
58->66
started
68
conhost.exe
58->68
started
70
conhost.exe
58->70
started
file19
process20
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