6da4df1cd9683bf6504d80fba93394c756fd623ab3cd11ab2ec2da590b37483c

Analysis

max time kernel
169s
max time network
174s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 04:19

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General

Target

0e37216f636bfac7ba1c1bad45952bd1.exe
Size

70KB
MD5

0e37216f636bfac7ba1c1bad45952bd1
SHA1

5fb2633a1a88803f734eebc4072b5b22eadc1d7c
SHA256

6da4df1cd9683bf6504d80fba93394c756fd623ab3cd11ab2ec2da590b37483c
SHA512

d9897f351f6cce55168c802136aae31b829461d5fe7c3bfa8bcc9146c4265d81d2ca49d74ccc42949f3b50be90ff0d0109308072773b299678091c36d1576e7a
SSDEEP

1536:g7YUnn6g+LKstpKHobUiggqAubBWEh4pW3A/TR:yX3+WsXKkghAuVWqA7R

Score

7^/10

persistence upx

Malware Config

Signatures

Loads dropped DLL 2 IoCs

pid	Process
2996	0e37216f636bfac7ba1c1bad45952bd1.exe
4472	rundll32.exe

UPX packed file 10 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/2996-3-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2996-4-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2996-2-0x0000000000400000-0x0000000000414000-memory.dmp	upx
behavioral2/memory/2996-10-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2996-15-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2996-12-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/2996-11-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4472-35-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4472-34-0x0000000010000000-0x0000000010014000-memory.dmp	upx
behavioral2/memory/4472-36-0x0000000010000000-0x0000000010014000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSServer = "rundll32.exe C:\\Windows\\system32\\rqRLcYRl.dll,#1"	rundll32.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\qoMfcArp.dll	0e37216f636bfac7ba1c1bad45952bd1.exe
File created	C:\Windows\SysWOW64\qoMfcArp.dll	0e37216f636bfac7ba1c1bad45952bd1.exe
File created	C:\Windows\SysWOW64\rqRLcYRl.dll	0e37216f636bfac7ba1c1bad45952bd1.exe
File opened for modification	C:\Windows\SysWOW64\rqRLcYRl.dll	0e37216f636bfac7ba1c1bad45952bd1.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A11C5AA1-0522-4E2C-8B55-61EC322A00BB}	rundll32.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A11C5AA1-0522-4E2C-8B55-61EC322A00BB}\InprocServer32	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A11C5AA1-0522-4E2C-8B55-61EC322A00BB}\InprocServer32\ = "C:\\Windows\\SysWow64\\rqRLcYRl.dll"	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{A11C5AA1-0522-4E2C-8B55-61EC322A00BB}\InprocServer32\ThreadingModel = "Both"	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2996	0e37216f636bfac7ba1c1bad45952bd1.exe
2996	0e37216f636bfac7ba1c1bad45952bd1.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe
4472	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2996	0e37216f636bfac7ba1c1bad45952bd1.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2996	0e37216f636bfac7ba1c1bad45952bd1.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2996 wrote to memory of 608	2996	0e37216f636bfac7ba1c1bad45952bd1.exe	3
PID 2996 wrote to memory of 4472	2996	0e37216f636bfac7ba1c1bad45952bd1.exe	100
PID 2996 wrote to memory of 4472	2996	0e37216f636bfac7ba1c1bad45952bd1.exe	100
PID 2996 wrote to memory of 4472	2996	0e37216f636bfac7ba1c1bad45952bd1.exe	100
PID 2996 wrote to memory of 2548	2996	0e37216f636bfac7ba1c1bad45952bd1.exe	101
PID 2996 wrote to memory of 2548	2996	0e37216f636bfac7ba1c1bad45952bd1.exe	101
PID 2996 wrote to memory of 2548	2996	0e37216f636bfac7ba1c1bad45952bd1.exe	101

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
PID:608

C:\Users\Admin\AppData\Local\Temp\0e37216f636bfac7ba1c1bad45952bd1.exe
"C:\Users\Admin\AppData\Local\Temp\0e37216f636bfac7ba1c1bad45952bd1.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2996
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Windows\system32\rqRLcYRl.dll,a
  2⤵
  - Loads dropped DLL
  - Adds Run key to start application
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  PID:4472
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\removalfile.bat "C:\Users\Admin\AppData\Local\Temp\0e37216f636bfac7ba1c1bad45952bd1.exe"
  2⤵
  PID:2548

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\removalfile.bat

Filesize
43B

MD5
9a7ef09167a6f4433681b94351509043

SHA1
259b1375ed8e84943ca1d42646bb416325c89e12

SHA256
d5739a0510d89da572eb0b0d394d4fb4dd361cd9ee0144b9b31c590df93c3be7

SHA512
96b84cd88a0e4b7c1122af3ed6ce5edf0a9a4e9bf79575eadfac16b2c46f1278d57755d29f21d7c6dcb4403be24b7ac7da4837c6cc9c602342a8f2b8e54883df

Download Submit
C:\Windows\SysWOW64\qoMfcArp.dll

Filesize
41KB

MD5
aa311a5d495054b14a456ffd0009a3b0

SHA1
e9bea0770957764467d60656c1c1cead783c710c

SHA256
13cbf21d4c445a9bba8b796e2fae9b9eba350dea79bb227b793603370fe4e5af

SHA512
01e9c0aeacf26898051c7cb7aeb2231659b34376603f8a47260f98ae33fd60e9954df8f5a40b7fe434f4bea822ec115ddf5c37eccd316c3b0d5e635bc2faa5e2

Download Submit
C:\Windows\SysWOW64\qoMfcArp.dll

Filesize
12KB

MD5
a83d571beb1cd6ad9691a5ff9b497c4b

SHA1
faf5f01eef98c33990f265b18fc7343909aad08e

SHA256
330b44960ba4e29ba4e1c2dce2bddca4c6ea15d63d0d7c40d8e5345491912174

SHA512
48fa95cb8a57fc91ad3428412ec0de37a731eb26abec165bec1680740e5fb679915f6975b9ac7ed66b0966bf40dfd5ba7a9750c125ea913ef0857281e349a606

Download Submit
C:\Windows\SysWOW64\rqRLcYRl.dll

Filesize
25KB

MD5
9133a312c04aa3c555884e05aaa7f701

SHA1
08a5ada9b5c46460e79333c83f304c755ef6701c

SHA256
08afd7d7304fb541bd1e6d83b0ac97c4adafb50a8908c32220ab44c80a0e95f9

SHA512
912c84b41b829470661939f56e228f84d4c24346fbf9cda1280a1d494aa06ee47b3ac0c29d30cd99cc7ee3c381d8fb017977794d7cb881f6056a2c1664d8c90d

Download Submit
C:\Windows\SysWOW64\rqRLcYRl.dll

Filesize
19KB

MD5
505021a311f577c5b19951e543fcbffa

SHA1
0a575d01d6217347610e63c3d1a38e157c20c1f0

SHA256
ac83942ba158078ceb963d500e6e91617ebf4393b67280a800d272675b14ba1c

SHA512
42afb7556c646cefed2e47f2d53446aa4252d48088031de8cc31b716a8096d162e9fe92441e771b4d713fc70b3db387cb71b90e37294d5ec5d56105ca481d0c8

Download Submit
memory/2996-13-0x0000000002CB0000-0x0000000002CB9000-memory.dmp

Filesize
36KB

Download
memory/2996-3-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2996-15-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2996-0-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2996-4-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2996-10-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2996-11-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2996-12-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/2996-2-0x0000000000400000-0x0000000000414000-memory.dmp

Filesize
80KB

Download
memory/2996-1-0x0000000002160000-0x0000000002170000-memory.dmp

Filesize
64KB

Download
memory/4472-34-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4472-35-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4472-31-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download
memory/4472-36-0x0000000010000000-0x0000000010014000-memory.dmp

Filesize
80KB

Download