97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c

General

Target

97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Size

113KB
MD5

ccaacce738da55bef3923652a00e0513
SHA1

ab13b8eec27d0d5112575b9308e247e2f80d6efa
SHA256

97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c
SHA512

a5b4fe0a5f25dcb4eec42c59b9f1e8f9043cef4603b70489e88b362700ae2e3e5bc6e2068469bdc2e1b92f019acf58338327348d0b2997e656e13b2517e6bbc9
SSDEEP

3072:hdypzwl22/lU8QKTvOucjZukl8R5wNdcG48ES:hdypklzi8QoOz4XIh4I

Score

10^/10

adware evasion persistence stealer upx

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 4 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Program Files\Internet Explorer\IEXPLORE.EXE = "C:\\Program Files\\Internet Explorer\\IEXPLORE.EXE:*:Enabled:Internet Explorer"	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe

Executes dropped EXE 1 IoCs

pid	Process
3844	msn.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0007000000022e5d-134.dat	upx
behavioral2/memory/3844-135-0x0000000000400000-0x000000000040D000-memory.dmp	upx
behavioral2/files/0x0007000000022e5d-136.dat	upx
behavioral2/memory/3844-139-0x0000000000400000-0x000000000040D000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	msn.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\MSN = "\"C:\\Windows\\SysWOW64\\msn.exe\" /INITSERVICE"	msn.exe

Installs/modifies Browser Helper Object 2 TTPs 1 IoCs

BHOs are DLL modules which act as plugins for Internet Explorer.

stealer adware

Modify Registry

T1112

Browser Extensions

T1176

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Explorer\browser helper obJects\{73364D99-1240-4dff-B11A-67E448373048}	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\msn.exe	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
File opened for modification	C:\Windows\SysWOW64\ipv6monl.dll	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
File opened for modification	C:\Windows\SysWOW64\msn.exe	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
File created	C:\Windows\SysWOW64\hook.dll	msn.exe
File created	C:\Windows\SysWOW64\ipv6monl.dll	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3844 set thread context of 4892	3844	msn.exe	82

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2252	4892	WerFault.exe	82

Modifies registry class 6 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73364D99-1240-4dff-B11A-67E448373048}\InprocServer32	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73364D99-1240-4dff-B11A-67E448373048}\InprocServer32\ = "C:\\Windows\\SysWow64\\ipv6monl.dll"	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73364D99-1240-4dff-B11A-67E448373048}\InprocServer32\ThreadingModel = "apartment"	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73364D99-1240-4dff-B11A-67E448373048}\InprocServer32\Enable Browser Extensions = "yes"	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\AppID\{73364D99-1240-4dff-B11A-67E448373048}	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{73364D99-1240-4dff-B11A-67E448373048}	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1932	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
3844	msn.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1932 wrote to memory of 3844	1932	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe	81
PID 1932 wrote to memory of 3844	1932	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe	81
PID 1932 wrote to memory of 3844	1932	97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe	81
PID 3844 wrote to memory of 4892	3844	msn.exe	82
PID 3844 wrote to memory of 4892	3844	msn.exe	82
PID 3844 wrote to memory of 4892	3844	msn.exe	82

C:\Users\Admin\AppData\Local\Temp\97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe
"C:\Users\Admin\AppData\Local\Temp\97a57b6781186991194ff52dd6174320dbd3bc824758a5291773b3cdb7576b5c.exe"
1⤵
- Modifies firewall policy service
- Checks computer location settings
- Installs/modifies Browser Helper Object
- Drops file in System32 directory
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1932
- C:\Windows\SysWOW64\msn.exe
  "C:\Windows\system32\msn.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3844
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe "C:\Windows\SysWOW64\msn.exe"
    3⤵
    PID:4892
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4892 -s 204
      4⤵
      Program crash
      PID:2252

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4892 -ip 4892
1⤵
PID:4904

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Browser Extensions

1

T1176

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\msn.exe

Filesize
14KB

MD5
2d73cdb097facfb6d564d1996b18df15

SHA1
e9cf0c7bbbd0e4cbd3e764d555795cd106e72514

SHA256
db6ec2a330003f1746ba8a00efed2bc7a0b532dc61dc24849956702fccc13ca6

SHA512
9644dc79202bc8a933266249afa74f8a564be6bf19c76833e22500cb349266fc0c23c0f8960a1add75112790a45a312ff5869f829b342522e5d343f2e58a457f

Download Submit
C:\Windows\SysWOW64\msn.exe

Filesize
14KB

MD5
2d73cdb097facfb6d564d1996b18df15

SHA1
e9cf0c7bbbd0e4cbd3e764d555795cd106e72514

SHA256
db6ec2a330003f1746ba8a00efed2bc7a0b532dc61dc24849956702fccc13ca6

SHA512
9644dc79202bc8a933266249afa74f8a564be6bf19c76833e22500cb349266fc0c23c0f8960a1add75112790a45a312ff5869f829b342522e5d343f2e58a457f

Download Submit
memory/1932-132-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/1932-137-0x0000000000400000-0x000000000041D000-memory.dmp

Filesize
116KB

Download
memory/3844-135-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/3844-139-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads