nymaim | 4098ed30f5e2a1d453182391fcef81703351574f6c286ac4308bf0be675de907

General

Target

file.exe
Size

353KB
MD5

b90bf592eb12ad336d85227381f6cd97
SHA1

3e89a8b2cd8a7c1168b698027570dbaf4324cd36
SHA256

4098ed30f5e2a1d453182391fcef81703351574f6c286ac4308bf0be675de907
SHA512

af580dbf51df295bb5078126c062cc6dc4e8027fccc7cbb7b61c5df17a5c15c1321d43be4136dd43f75a2ad7d256cd46b7893b4af9171875c4e999921b7a5772
SSDEEP

6144:B4J7ELi+hv99zL+bp1Cf0pgseVPlloeYbr/uzbgwuxc1wVf:2Cm+hv99XGw+gs8P4jHunnqc

Score

10^/10

nymaim trojan

Malware Config

Extracted

Family

nymaim

C2

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
4076	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	file.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x000200000001e704-139.dat	autoit_exe
behavioral2/files/0x000200000001e704-140.dat	autoit_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
2608	1060	WerFault.exe	79
1068	1060	WerFault.exe	79
2312	1060	WerFault.exe	79
1488	1060	WerFault.exe	79
5096	1060	WerFault.exe	79
1684	1060	WerFault.exe	79
4476	1060	WerFault.exe	79
3868	1060	WerFault.exe	79
4296	1060	WerFault.exe	79
748	4076	WerFault.exe	107
3232	1060	WerFault.exe	79

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1060	file.exe
1060	file.exe
1060	file.exe
1060	file.exe
1060	file.exe
1060	file.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1060	file.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1060 wrote to memory of 952	1060	file.exe	105
PID 1060 wrote to memory of 952	1060	file.exe	105
PID 1060 wrote to memory of 952	1060	file.exe	105
PID 952 wrote to memory of 4076	952	cmd.exe	107
PID 952 wrote to memory of 4076	952	cmd.exe	107

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:1060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 460
  2⤵
  - Program crash
  PID:2608
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 764
  2⤵
  - Program crash
  PID:1068
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 804
  2⤵
  - Program crash
  PID:2312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 804
  2⤵
  - Program crash
  PID:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 800
  2⤵
  - Program crash
  PID:5096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 840
  2⤵
  - Program crash
  PID:1684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 996
  2⤵
  - Program crash
  PID:4476
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 1048
  2⤵
  - Program crash
  PID:3868
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 1380
  2⤵
  - Program crash
  PID:4296
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /I "" "C:\Users\Admin\AppData\Local\Temp\IRbheKW2W\Cleaner.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:952
- - C:\Users\Admin\AppData\Local\Temp\IRbheKW2W\Cleaner.exe
    "C:\Users\Admin\AppData\Local\Temp\IRbheKW2W\Cleaner.exe"
    3⤵
    - Executes dropped EXE
    PID:4076
  - - C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 4076 -s 972
      4⤵
      Program crash
      PID:748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1060 -s 1384
  2⤵
  - Program crash
  PID:3232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1060 -ip 1060
1⤵
PID:1452

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1060 -ip 1060
1⤵
PID:4500

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1060 -ip 1060
1⤵
PID:1064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1060 -ip 1060
1⤵
PID:2176

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1060 -ip 1060
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 1060 -ip 1060
1⤵
PID:2088

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 1060 -ip 1060
1⤵
PID:2680

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1060 -ip 1060
1⤵
PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 1060 -ip 1060
1⤵
PID:2132

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 572 -p 4076 -ip 4076
1⤵
PID:1508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 572 -p 1060 -ip 1060
1⤵
PID:4988

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IRbheKW2W\Cleaner.exe

Filesize
3.8MB

MD5
04514bd4962f7d60679434e0ebe49184

SHA1
1493a5447eb8156a7d7aecff60ee8bfba2209526

SHA256
c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568

SHA512
a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e

Download Submit
C:\Users\Admin\AppData\Local\Temp\IRbheKW2W\Cleaner.exe

Filesize
3.8MB

MD5
04514bd4962f7d60679434e0ebe49184

SHA1
1493a5447eb8156a7d7aecff60ee8bfba2209526

SHA256
c394b068aa87264419f60838a8812b750e67cf93f2494c62b9078c3708072568

SHA512
a71c7ed5dfdda22f095dc99b16e8342a42e3361be16e0241dbf8983dd0d5f6e90eb0299aac1815cf78ad3a9f15fa89b42b720b7f818ee5f502300f102ef4c93e

Download Submit
memory/1060-133-0x00000000005D0000-0x000000000060F000-memory.dmp

Filesize
252KB

Download
memory/1060-134-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1060-135-0x00000000004BC000-0x00000000004E2000-memory.dmp

Filesize
152KB

Download
memory/1060-136-0x0000000000400000-0x000000000045E000-memory.dmp

Filesize
376KB

Download
memory/1060-132-0x00000000004BC000-0x00000000004E2000-memory.dmp

Filesize
152KB

Download
memory/4076-141-0x000001A560A90000-0x000001A560BE6000-memory.dmp

Filesize
1.3MB

Download
memory/4076-142-0x00007FFE80B20000-0x00007FFE815E1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-143-0x00007FFE80B20000-0x00007FFE815E1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-144-0x00007FFE80B20000-0x00007FFE815E1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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