f11939bf24b075fec37a952e68bc0a9b94eca67dd105d4a9d58e8925a744b263

General

Target

a1a8b9c13360898aebd46c12abee7018.exe
Size

274KB
MD5

a1a8b9c13360898aebd46c12abee7018
SHA1

03bdba42f863a52b325eed51b8b39d4f91b27077
SHA256

f11939bf24b075fec37a952e68bc0a9b94eca67dd105d4a9d58e8925a744b263
SHA512

b65cec6b7f4313ea4f2ceb297c496bfe8b3da46d0f683e073f353bd02d02d25779dee5fcc95b3b7e4e61ec4cef6f1980a4b59533530f78316d209bc1e73fd2e7
SSDEEP

6144:KzPvmPqyDRfTCMVsVXlmd/S9nUg6f2SBn8kUBMyTcRTZQ:ImPFO/Xsw9Ug6f2OFUqyToN

Score

10^/10

persistence spyware stealer upx

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-910440534-423636034-2318342392-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,C:\\Users\\Admin\\AppData\\Roaming\\B4327\\F1ED3.exe"	a1a8b9c13360898aebd46c12abee7018.exe

Executes dropped EXE 1 IoCs

pid	Process
3552	AB53.tmp

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1536-1-0x0000000000400000-0x00000000004A9000-memory.dmp	upx
behavioral2/memory/1476-12-0x0000000000400000-0x00000000004A9000-memory.dmp	upx
behavioral2/memory/1536-48-0x0000000000400000-0x00000000004A9000-memory.dmp	upx
behavioral2/memory/4724-106-0x0000000000400000-0x00000000004A9000-memory.dmp	upx
behavioral2/memory/1536-108-0x0000000000400000-0x00000000004A9000-memory.dmp	upx
behavioral2/memory/1536-179-0x0000000000400000-0x00000000004A9000-memory.dmp	upx
behavioral2/memory/1536-184-0x0000000000400000-0x00000000004A9000-memory.dmp	upx

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Internet Explorer\D3AB\AB53.tmp	a1a8b9c13360898aebd46c12abee7018.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2388	3552	WerFault.exe	91

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1536 wrote to memory of 1476	1536	a1a8b9c13360898aebd46c12abee7018.exe	87
PID 1536 wrote to memory of 1476	1536	a1a8b9c13360898aebd46c12abee7018.exe	87
PID 1536 wrote to memory of 1476	1536	a1a8b9c13360898aebd46c12abee7018.exe	87
PID 1536 wrote to memory of 4724	1536	a1a8b9c13360898aebd46c12abee7018.exe	88
PID 1536 wrote to memory of 4724	1536	a1a8b9c13360898aebd46c12abee7018.exe	88
PID 1536 wrote to memory of 4724	1536	a1a8b9c13360898aebd46c12abee7018.exe	88
PID 1536 wrote to memory of 3552	1536	a1a8b9c13360898aebd46c12abee7018.exe	91
PID 1536 wrote to memory of 3552	1536	a1a8b9c13360898aebd46c12abee7018.exe	91
PID 1536 wrote to memory of 3552	1536	a1a8b9c13360898aebd46c12abee7018.exe	91

C:\Users\Admin\AppData\Local\Temp\a1a8b9c13360898aebd46c12abee7018.exe
"C:\Users\Admin\AppData\Local\Temp\a1a8b9c13360898aebd46c12abee7018.exe"
1⤵
- Modifies WinLogon for persistence
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Users\Admin\AppData\Local\Temp\a1a8b9c13360898aebd46c12abee7018.exe
  C:\Users\Admin\AppData\Local\Temp\a1a8b9c13360898aebd46c12abee7018.exe startC:\Program Files (x86)\Internet Explorer\D3AB\A5E.exe%C:\Program Files (x86)\Internet Explorer\D3AB
  2⤵
  PID:1476
- C:\Users\Admin\AppData\Local\Temp\a1a8b9c13360898aebd46c12abee7018.exe
  C:\Users\Admin\AppData\Local\Temp\a1a8b9c13360898aebd46c12abee7018.exe startC:\Program Files (x86)\27631\lvvm.exe%C:\Program Files (x86)\27631
  2⤵
  PID:4724
- C:\Program Files (x86)\Internet Explorer\D3AB\AB53.tmp
  "C:\Program Files (x86)\Internet Explorer\D3AB\AB53.tmp"
  2⤵
  - Executes dropped EXE
  PID:3552
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3552 -s 336
    3⤵
    - Program crash
    PID:2388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3552 -ip 3552
1⤵
PID:3600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

1

T1112

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Internet Explorer\D3AB\AB53.tmp

Filesize
102KB

MD5
98983d9e6d149afd05c73f9fc444f4a9

SHA1
249cb0c59c29e0ae8940ce6928cb7e6a1d0e5bb9

SHA256
84a1c17937e04bd5090897594950e1aef33acfbbbd675fc7e319d000dfb3110a

SHA512
d94ac1f1b118ae5779458392b31375b064894807e0fc6a3fb9cbc67fb8897ba591054235bf6b52dfd21dd964bb3fe6449bfc6049ccb5466046bfe95361d33fbb

Download Submit
C:\Users\Admin\AppData\Roaming\B4327\7631.432

Filesize
996B

MD5
8ba13fa411fc986a17645d4a769d0717

SHA1
97c51713831265f8755914b8f433a1ba5d33a38d

SHA256
b7be9d591b7901ae83ebe00d93c6b85d317cbc7db8fae42dc810aacd1a15ac89

SHA512
6822f6e850d45b3c677fd3623a937612bf03fd8c84d2efe6e314d4907f8d50e33fda669e21abd906aa67b5194cb594917be7aec03dddf1d4cfa3bad81322372f

Download Submit
C:\Users\Admin\AppData\Roaming\B4327\7631.432

Filesize
600B

MD5
a5402b01d5d2345d2007f4ca6678d8cb

SHA1
630c7eea4b05b9a2844744109adcbc5cb7c6f130

SHA256
68448b6253b3e9e72b6dd5ab7a7ee4ade988a4673eba77282febe10284f9730c

SHA512
6c252d6def7ef4afca2d6c3da0cb01edc9c9031a8d1a4556339844849532f2afc14e8971579f317033c7c34e2b208fb5f336fe7ebb39e61261096768128ee7c5

Download Submit
memory/1476-12-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1476-14-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/1476-174-0x00000000005F0000-0x00000000006F0000-memory.dmp

Filesize
1024KB

Download
memory/1536-2-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/1536-108-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1536-109-0x0000000000710000-0x0000000000810000-memory.dmp

Filesize
1024KB

Download
memory/1536-48-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1536-1-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1536-179-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/1536-184-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4724-107-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download
memory/4724-106-0x0000000000400000-0x00000000004A9000-memory.dmp

Filesize
676KB

Download
memory/4724-180-0x0000000000690000-0x0000000000790000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads