nymaim | b62d41e5610ea462635e041f000f4808da15e2a3baf2400b623487da4f55d9c4

Analysis

max time kernel
142s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/10/2022, 19:32

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General

Target
file.exe
Size 235KB
Sample221001-x8yrvsdfek
SHA256 b62d41e5610ea462635e041f000f4808da15e2a3baf2400b623487da4f55d9c4
MD5 77de4619e01204f684971c3cc00ba529
SHA1 850ab75224e867afb05d3976ab2fc642a65b446e
SHA512 22359f51414cbad2bf5c9f41f89319c1b87b8ea37d316e364d18317d31e948023cd1cad3969a57f9f6978fbfcb3599ce828e9f1cafa7cd29b5de76c99e1ec268
SSDEEP 3072:H0CGDXGRKomsttu3WbnwN+ylmi0/3HF00HWLik5XRR9EIEgxR27V/QJjGOt:mDxomysmbwN+ylPECrRR9BhxQ7BEj
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

208.67.104.97
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim
Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
1244	Cleaner.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	file.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 11 IoCs

pid	pid_target	Process	procid_target
3572	320	WerFault.exe	81
4764	320	WerFault.exe	81
1112	320	WerFault.exe	81
1720	320	WerFault.exe	81
4228	320	WerFault.exe	81
4292	320	WerFault.exe	81
4604	320	WerFault.exe	81
32	320	WerFault.exe	81
936	320	WerFault.exe	81
8	1244	WerFault.exe	105
1164	320	WerFault.exe	81

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
320	file.exe
320	file.exe
320	file.exe
320	file.exe
320	file.exe
320	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
320	file.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 320 wrote to memory of 2128	320	file.exe	103
PID 320 wrote to memory of 2128	320	file.exe	103
PID 320 wrote to memory of 2128	320	file.exe	103
PID 2128 wrote to memory of 1244	2128	cmd.exe	105
PID 2128 wrote to memory of 1244	2128	cmd.exe	105

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:320
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 444
  2⤵
  - Program crash
  PID:3572
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 776
  2⤵
  - Program crash
  PID:4764
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 764
  2⤵
  - Program crash
  PID:1112
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 764
  2⤵
  - Program crash
  PID:1720
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 812
  2⤵
  - Program crash
  PID:4228
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 928
  2⤵
  - Program crash
  PID:4292
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 1020
  2⤵
  - Program crash
  PID:4604
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 1088
  2⤵
  - Program crash
  PID:32
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 1392
  2⤵
  - Program crash
  PID:936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\wTrzp4BgHuvhxDSvMAXXTePIf\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2128
- - C:\Users\Admin\AppData\Local\Temp\wTrzp4BgHuvhxDSvMAXXTePIf\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\wTrzp4BgHuvhxDSvMAXXTePIf\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    PID:1244
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 1244 -s 980
      4⤵
      Program crash
      PID:8
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 320 -s 1384
  2⤵
  - Program crash
  PID:1164

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 320 -ip 320
1⤵
PID:4268

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 320 -ip 320
1⤵
PID:1680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 320 -ip 320
1⤵
PID:4628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 320 -ip 320
1⤵
PID:1656

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 320 -ip 320
1⤵
PID:640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 564 -p 320 -ip 320
1⤵
PID:368

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 320 -ip 320
1⤵
PID:2216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 612 -p 320 -ip 320
1⤵
PID:3388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 620 -p 320 -ip 320
1⤵
PID:4552

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 636 -p 1244 -ip 1244
1⤵
PID:1184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 620 -p 320 -ip 320
1⤵
PID:2780

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\wTrzp4BgHuvhxDSvMAXXTePIf\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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Cleaner.exe

Path C:\Users\Admin\AppData\Local\Temp\wTrzp4BgHuvhxDSvMAXXTePIf\Cleaner.exe
Size 4.0MB
SHA256 f349739486dcb45f7cd39440784224c66a5d2c4bd2a47c48606e2f481a0fabe7
MD5 a1a19faf0af29841daeeaad999d899bd
SHA1 f67b9afdab167d5bcc544358b0e7fd2858784508
SHA512 a66ec486262e797bafd4fa032a719e499217993479fa78938e43db13289fe6fefc0ef3c3359e3cacb6223134396852be7cc9122c46ae74db3e9842d7f4fe65a8
SSDEEP 49152:M/PD/DL/D9CuZrr2h60qPGPD/jL/jdCuZrL2BaUKPmPD/jL/jdCuZrL2BaUKPs:M3D///UUrP6D/f/UULPaD/f/UULPs
MD5 SHA1 SHA512 SSDEEP

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memory/320-132-0x00000000007FD000-0x0000000000823000-memory.dmp

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memory/320-133-0x00000000022D0000-0x000000000230F000-memory.dmp

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memory/320-134-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/320-135-0x00000000007FD000-0x0000000000823000-memory.dmp

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memory/320-136-0x0000000000400000-0x0000000000597000-memory.dmp

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memory/1244-141-0x0000017F57800000-0x0000017F57958000-memory.dmp

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memory/1244-142-0x00007FFEA4F50000-0x00007FFEA5A11000-memory.dmp

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memory/1244-143-0x00007FFEA4F50000-0x00007FFEA5A11000-memory.dmp

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