yunsip | b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4

Analysis

max time kernel
93s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/04/2024, 00:44

Target
b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4.dll
Size 950KB
Sample240408-a3r1ssbf84
SHA256 b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4
MD5 45674e9231a4b9fa9efd4b5cbdbc8519
SHA1 c453d96e1c3c34c91e6bb4b04522638083bb6386
SHA512 04972fcf6cce83fc2d000493d151909246220bc0b857fa196e15af14164fcd8139bf5f9e0d193058ea1f51a0ef263d0d951ea897ef93ad6a4cb25d47498da64e
SSDEEP 1536:qGDOFSxjmiBu1Os57IXLUxUX0uX+u8Dj7XE+40b0vwjb87uGl0xQsr:lqFSxjolNmzX0Xu8vAn204jb+uHxQsr
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

Yunsip
Remote backdoor which communicates with a C2 server to receive commands.
trojan banker yunsip

UPX dump on OEP (original entry point) 1 IoCs

resource	yara_rule
behavioral2/memory/1116-0-0x0000000010000000-0x0000000010025000-memory.dmp	UPX

UPX packed file 1 IoCs

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

resource	yara_rule
behavioral2/memory/1116-0-0x0000000010000000-0x0000000010025000-memory.dmp	upx

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 820 wrote to memory of 1116	820	rundll32.exe	86
PID 820 wrote to memory of 1116	820	rundll32.exe	86
PID 820 wrote to memory of 1116	820	rundll32.exe	86

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:820
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4.dll,#1
  2⤵
  PID:1116

memory/1116-0-0x0000000010000000-0x0000000010025000-memory.dmp

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