83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841

Analysis

max time kernel
150s
max time network
114s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
21/10/2022, 05:15

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General

Target

83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe
Size

229KB
MD5

28e1e8cab29f84112839f9fe891bef22
SHA1

e0910c851fc8489615bebadd3611061d38edb323
SHA256

83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841
SHA512

9a8617617e1377ad931ec41d164b86a2114b192fd68a352871fe97710b5d4e578b6084f358b89f849e18d13e3fe868c7c659992434b0ad0191d2ceeffc053b8d
SSDEEP

3072:D5VvdQC6IVXxGmk/2FJEcM4qN+y6wJaQXXgctlnXNCFbdgOSKivew:D1rH4/2jEhTN+ydfXzl9CFbfS

Score

8^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
996	Jseloa.exe

UPX packed file 1 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000015648-57.dat	upx

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\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run	Jseloa.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\C2MJB7NYRU = "C:\\Windows\\Jseloa.exe"	Jseloa.exe

Drops file in Windows directory 4 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Jseloa.exe	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe
File created	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe
File opened for modification	C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe
File created	C:\Windows\Jseloa.exe	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe

Modifies Internet Explorer settings 1 TTPs 2 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\Main	Jseloa.exe
Key created	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Internet Explorer\International	Jseloa.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe
996	Jseloa.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1376 wrote to memory of 996	1376	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe	26
PID 1376 wrote to memory of 996	1376	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe	26
PID 1376 wrote to memory of 996	1376	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe	26
PID 1376 wrote to memory of 996	1376	83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe	26

C:\Users\Admin\AppData\Local\Temp\83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe
"C:\Users\Admin\AppData\Local\Temp\83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\Jseloa.exe
  C:\Windows\Jseloa.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  PID:996

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Jseloa.exe

Filesize
229KB

MD5
28e1e8cab29f84112839f9fe891bef22

SHA1
e0910c851fc8489615bebadd3611061d38edb323

SHA256
83bf4109eeb38323e2262a7f8d95f0c8bc7088baca4fc635706c1e0aaadb7841

SHA512
9a8617617e1377ad931ec41d164b86a2114b192fd68a352871fe97710b5d4e578b6084f358b89f849e18d13e3fe868c7c659992434b0ad0191d2ceeffc053b8d

Download Submit
C:\Windows\Tasks\{62C40AA6-4406-467a-A5A5-DFDF1B559B7A}.job

Filesize
408B

MD5
9206fcc2a7e67229e13585aa2dd22185

SHA1
d8552dd1c3412feb1e22c110bc5c56aedf84c3ad

SHA256
47c9db4eb861112c786a65e401ccabd1db7ab5c96979e60f90ba132075f817e3

SHA512
5d2f3e92ee1e98a6a2ba1d7bdedba3f7a0a98d878dc55c1d84fdb7e3f1ca75d69ff51ca623c0ab16ec0aaeae966541541e0c234b290f693f915eb123c7077e75

Download Submit
memory/996-61-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/996-64-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1376-54-0x0000000075091000-0x0000000075093000-memory.dmp

Filesize
8KB

Download
memory/1376-55-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1376-60-0x0000000000820000-0x000000000085B000-memory.dmp

Filesize
236KB

Download
memory/1376-62-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1376-63-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download