a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140

Analysis

max time kernel
41s
max time network
46s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
03/12/2022, 07:52

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General

Target

a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Size

13KB
MD5

41ea56aa7df257d90941a70c63c01c11
SHA1

83176110618d9c538e892e558c17b613c6ff86a0
SHA256

a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140
SHA512

e266b3d338a7977108a8eb03c241766a137996a7b481ee7a896c46d546742de02583b0cf981f2a3b0f8b4f2e3a0125c5f749f4b4d844ecb5293dbd47ebc89c8b
SSDEEP

192:olQ6l8UKVBc0XiYnTdGIK14OBzREJ66UBxK6WDQPtw89oMMoy/YOEGR9sQhDbSAF:mylMWiYTd1K1/JWjz1BwQhDbSAF

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\config\appsystem.sav	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
File opened for modification	C:\Windows\SysWOW64\config\appsystem.sav	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Extensions\{285FE075-F0A9-48a5-A339-9D17FEC9F8F1}\HotIcon = "C:\\Windows\\system32\\hk.ico"	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Extensions\{285FE075-F0A9-48a5-A339-9D17FEC9F8F1}\Exec = "http://hk.100to.com/"	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Internet Explorer\NetIE = "10"	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Internet Explorer\Extensions\{285FE075-F0A9-48a5-A339-9D17FEC9F8F1}	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Extensions\{285FE075-F0A9-48a5-A339-9D17FEC9F8F1}\CLSID = "{1FBA04EE-3024-11D2-8F1F-0000F87ABD16}"	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Extensions\{285FE075-F0A9-48a5-A339-9D17FEC9F8F1}\Default Visible = "Yes"	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Extensions\{285FE075-F0A9-48a5-A339-9D17FEC9F8F1}\ButtonText = "°ÙÈ¤Ïã¸Ûµê"	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Internet Explorer\Extensions\{285FE075-F0A9-48a5-A339-9D17FEC9F8F1}\Icon = "C:\\Windows\\system32\\hk.ico"	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 1052 wrote to memory of 1784	1052	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe	30
PID 1052 wrote to memory of 1784	1052	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe	30
PID 1052 wrote to memory of 1784	1052	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe	30
PID 1052 wrote to memory of 1784	1052	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe	30
PID 1052 wrote to memory of 1784	1052	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe	30
PID 1052 wrote to memory of 1784	1052	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe	30
PID 1052 wrote to memory of 1784	1052	a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe	30

C:\Users\Admin\AppData\Local\Temp\a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe
"C:\Users\Admin\AppData\Local\Temp\a16a8d6369d611a6e904fdfa0960e5f102a2205b2ddd24c531209ecc84507140.exe"
1⤵
- Drops file in System32 directory
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1052
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\System32\rundll32.exe" netie.dll,Rundll32
  2⤵
  PID:1784

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1052-54-0x0000000075931000-0x0000000075933000-memory.dmp

Filesize
8KB

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