yunsip | b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4

Analysis

max time kernel
122s
max time network
123s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
08-04-2024 00:44

Target

b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4.dll
Size

950KB
MD5

45674e9231a4b9fa9efd4b5cbdbc8519
SHA1

c453d96e1c3c34c91e6bb4b04522638083bb6386
SHA256

b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4
SHA512

04972fcf6cce83fc2d000493d151909246220bc0b857fa196e15af14164fcd8139bf5f9e0d193058ea1f51a0ef263d0d951ea897ef93ad6a4cb25d47498da64e
SSDEEP

1536:qGDOFSxjmiBu1Os57IXLUxUX0uX+u8Dj7XE+40b0vwjb87uGl0xQsr:lqFSxjolNmzX0Xu8vAn204jb+uHxQsr

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
behavioral1/memory/2828-0-0x0000000010000000-0x0000000010025000-memory.dmp	UPX

UPX packed file 1 IoCs

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

resource	yara_rule
behavioral1/memory/2828-0-0x0000000010000000-0x0000000010025000-memory.dmp	upx

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 2828	2500	rundll32.exe	28
PID 2500 wrote to memory of 2828	2500	rundll32.exe	28
PID 2500 wrote to memory of 2828	2500	rundll32.exe	28
PID 2500 wrote to memory of 2828	2500	rundll32.exe	28
PID 2500 wrote to memory of 2828	2500	rundll32.exe	28
PID 2500 wrote to memory of 2828	2500	rundll32.exe	28
PID 2500 wrote to memory of 2828	2500	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\b705a749873cd663be73c5e90564e882f085d6d748a9c36ef43fcaacc40477f4.dll,#1
  2⤵
  PID:2828

memory/2828-0-0x0000000010000000-0x0000000010025000-memory.dmp

Filesize
148KB

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