nymaim

General

Target

file.exe
Size

380KB
Sample

221130-tca45sgd7w
MD5

c4807ea6c4ee04746a88248c855cb71d
SHA1

b2890822011c4c315d2fa8d3fcb0f635bea3aa1c
SHA256

5bd0f1a500c8eb22f267f4414a8187c5f77f3b02b66d5dc9f9f42c2ff1206b1e
SHA512

f1c889d413390fa47c0dfe7e0d39264bbc58eb9a29c00a9b4e506e96aa9bf6f1a3440486b1bdff480142d1e62eb086a7edbcd0086b442f448fb3cb53587d637d
SSDEEP

6144:x/QiQXCpkm+ksmpk3U9j0IJaOGBfj/WUplm6zIOYQNd28pTXdAmpCLVRZoglM7LT:pQi3pP6m6UR0IJalL//plmW9bTXeVhD4

Score

10^/10

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

85.31.46.167

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://grilloo.net/js/vendor/config_20.ps1

Targets

- Target
  
  file.exe
- Size
  
  380KB
- MD5
  
  c4807ea6c4ee04746a88248c855cb71d
- SHA1
  
  b2890822011c4c315d2fa8d3fcb0f635bea3aa1c
- SHA256
  
  5bd0f1a500c8eb22f267f4414a8187c5f77f3b02b66d5dc9f9f42c2ff1206b1e
- SHA512
  
  f1c889d413390fa47c0dfe7e0d39264bbc58eb9a29c00a9b4e506e96aa9bf6f1a3440486b1bdff480142d1e62eb086a7edbcd0086b442f448fb3cb53587d637d
- SSDEEP
  
  6144:x/QiQXCpkm+ksmpk3U9j0IJaOGBfj/WUplm6zIOYQNd28pTXdAmpCLVRZoglM7LT:pQi3pP6m6UR0IJalL//plmW9bTXeVhD4
Score

10^/10

nymaim discovery evasion persistence trojan vmprotect
- NyMaim
  NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
  trojan nymaim
- Process spawned unexpected child process
  This typically indicates the parent process was compromised via an exploit or macro.
- Suspicious use of NtCreateUserProcessOtherParentProcess
- Checks for common network interception software
  Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.
  evasion
- Blocklisted process makes network request
- Downloads MZ/PE file
- Drops file in Drivers directory
- Executes dropped EXE
- VMProtect packed file
  Detects executables packed with VMProtect commercial packer.
  vmprotect
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL
- Unexpected DNS network traffic destination
  Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Adds Run key to start application
  persistence
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory
- Suspicious use of SetThreadContext
behavioral1 behavioral2