749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf

General

Target

749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
Size

771KB
MD5

3ffad42e2e3cfd13037aa0533ed909f1
SHA1

603014c761d72273b6dec968b72b7a3df8dc7c83
SHA256

749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf
SHA512

8cf29b5ea9c8190a36e4d32af0320add230a73f5479d1340dd42c3f9819c6d1c2f84b19a5e4fbabe854cb528c621b45e95949be1ffc4880d785c2f4312e22376
SSDEEP

12288:uRYco+gunQUnykqVNeN24eq0P1FF/4mt6HhLJ:u2ZunQUnaVNeN2xnF/4JHhLJ

Score

10^/10

evasion persistence spyware stealer upx

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.gmail.com
Port:
587
Username:
[email protected]
Password:
keylogger

Signatures

Nirsoft 3 IoCs

resource	yara_rule
behavioral2/memory/4092-137-0x0000000000400000-0x0000000000418000-memory.dmp	Nirsoft
behavioral2/memory/1816-142-0x0000000000400000-0x0000000000419000-memory.dmp	Nirsoft
behavioral2/memory/1816-143-0x0000000000400000-0x0000000000419000-memory.dmp	Nirsoft

Executes dropped EXE 2 IoCs

pid	Process
4092	dialup.exe
1816	passwordfox.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
2760	netsh.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral2/files/0x0006000000022e25-135.dat	upx
behavioral2/files/0x0006000000022e25-136.dat	upx
behavioral2/memory/4092-137-0x0000000000400000-0x0000000000418000-memory.dmp	upx
behavioral2/files/0x0006000000022e27-140.dat	upx
behavioral2/files/0x0006000000022e27-141.dat	upx
behavioral2/memory/1816-142-0x0000000000400000-0x0000000000419000-memory.dmp	upx
behavioral2/memory/1816-143-0x0000000000400000-0x0000000000419000-memory.dmp	upx

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
T1081

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Windows\\system32\\Metin2 Theme for Windows"	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Firefox = "C:\\Users\\Admin\\AppData\\Local\\Temp\\749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe"	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\541's Stub = "C:\\Users\\Admin\\AppData\\Local\\Temp\\749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe"	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\system32\Metin2 Theme for Windows	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
File opened for modification	C:\Windows\system32\Metin2 Theme for Windows	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4460 wrote to memory of 2760	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	82
PID 4460 wrote to memory of 2760	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	82
PID 4460 wrote to memory of 4092	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	84
PID 4460 wrote to memory of 4092	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	84
PID 4460 wrote to memory of 4092	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	84
PID 4460 wrote to memory of 1816	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	85
PID 4460 wrote to memory of 1816	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	85
PID 4460 wrote to memory of 1816	4460	749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe	85

C:\Users\Admin\AppData\Local\Temp\749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe
"C:\Users\Admin\AppData\Local\Temp\749635fd11938a4ea105ad99f9a706d4a47890c1ad428cf6125958ddc1744fbf.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4460
- C:\Windows\SYSTEM32\netsh.exe
  "netsh.exe" firewall set opmode disable
  2⤵
  - Modifies Windows Firewall
  PID:2760
- C:\Users\Admin\AppData\Local\Temp\dialup.exe
  C:\Users\Admin\AppData\Local\Temp\dialup.exe /stext C:\Users\Admin\AppData\Local\Temp\data.txt
  2⤵
  - Executes dropped EXE
  PID:4092
- C:\Users\Admin\AppData\Local\Temp\passwordfox.exe
  C:\Users\Admin\AppData\Local\Temp\passwordfox.exe /stext C:\Users\Admin\AppData\Local\Temp\firefox.txt
  2⤵
  - Executes dropped EXE
  PID:1816

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\data.txt

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Local\Temp\dialup.exe

Filesize
37KB

MD5
9c8872c879d0a9d82988920488370864

SHA1
87ff4231547462e6474c832e28831dd691d83fd4

SHA256
8f576d5191721f8fdb47bb22950f43fc8f2c9cc880fe067090ed96e6fcb07a97

SHA512
3c413427c46ef92a412840479896841ffd5c6eb9215b8ecc416cdbd4f8e0f2eb643ed3b7f2e18eb5710ba7c55e1cd82af6637285ee364e069503c5ecc187cb2e

Download Submit
C:\Users\Admin\AppData\Local\Temp\dialup.exe

Filesize
37KB

MD5
9c8872c879d0a9d82988920488370864

SHA1
87ff4231547462e6474c832e28831dd691d83fd4

SHA256
8f576d5191721f8fdb47bb22950f43fc8f2c9cc880fe067090ed96e6fcb07a97

SHA512
3c413427c46ef92a412840479896841ffd5c6eb9215b8ecc416cdbd4f8e0f2eb643ed3b7f2e18eb5710ba7c55e1cd82af6637285ee364e069503c5ecc187cb2e

Download Submit
C:\Users\Admin\AppData\Local\Temp\passwordfox.exe

Filesize
37KB

MD5
a1d6a37917dcf4471486bc5a0e725cc6

SHA1
5b09f10dc215078ae44f535de12630c38f3b86e3

SHA256
8a06acd1158060a54d67098f07c1ff7895f799bc5834179b8aae04d28fb60e17

SHA512
5798a5d85052d5c2f6b781b91a400c85bc96c0127cc4e18079bff1f17bd302dc07c0f015ddf1105621a841680057322eb0172ba06063f55d795b7b079f1d26d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\passwordfox.exe

Filesize
37KB

MD5
a1d6a37917dcf4471486bc5a0e725cc6

SHA1
5b09f10dc215078ae44f535de12630c38f3b86e3

SHA256
8a06acd1158060a54d67098f07c1ff7895f799bc5834179b8aae04d28fb60e17

SHA512
5798a5d85052d5c2f6b781b91a400c85bc96c0127cc4e18079bff1f17bd302dc07c0f015ddf1105621a841680057322eb0172ba06063f55d795b7b079f1d26d2

Download Submit
memory/1816-142-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/1816-143-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/4092-137-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/4460-132-0x00007FFE4D6F0000-0x00007FFE4E126000-memory.dmp

Filesize
10.2MB

Download

Analysis

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