nymaim | f3231a039f3898bbff37d1cbe3c7c60bf1701d05eab14f69cb0b8aa40e420f79

General

Target

file.exe
Size

396KB
MD5

ba9783b9a49d73e4c499b416394c3a68
SHA1

8b3e1811acc2f100b034de9cb79f4a3e57378fde
SHA256

f3231a039f3898bbff37d1cbe3c7c60bf1701d05eab14f69cb0b8aa40e420f79
SHA512

93b59e6393c3f6ca8cbd876230f26c1dd7e6ec4d4f97acb6fa2853c5596ce5b295d78cb5038a39c82c56c7a12fdb4ae6e122aa08ae56bf55d5651ac28d3f9516
SSDEEP

6144:PemQju+KCWSg9ZszB5KyHqkAL1+4Ed/xSgE2BuzbgwuMWwVfs:P0qwLOZWuyHqJ+57SQBunnO

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

Executes dropped EXE 1 IoCs

pid	Process
1996	MhT3Jp8.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-1-5-21-2891029575-1462575-1165213807-1000\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 10 IoCs

pid	pid_target	Process	procid_target
2096	2520	WerFault.exe	81
4064	2520	WerFault.exe	81
5008	2520	WerFault.exe	81
3512	2520	WerFault.exe	81
1384	2520	WerFault.exe	81
4640	2520	WerFault.exe	81
3012	2520	WerFault.exe	81
1932	2520	WerFault.exe	81
3772	2520	WerFault.exe	81
2300	2520	WerFault.exe	81

Kills process with taskkill 1 IoCs

evasion

pid	Process
1368	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2520	file.exe
2520	file.exe
2520	file.exe
2520	file.exe
2520	file.exe
2520	file.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1368	taskkill.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 1996	2520	file.exe	104
PID 2520 wrote to memory of 1996	2520	file.exe	104
PID 2520 wrote to memory of 1996	2520	file.exe	104
PID 2520 wrote to memory of 1412	2520	file.exe	108
PID 2520 wrote to memory of 1412	2520	file.exe	108
PID 2520 wrote to memory of 1412	2520	file.exe	108
PID 1412 wrote to memory of 1368	1412	cmd.exe	112
PID 1412 wrote to memory of 1368	1412	cmd.exe	112
PID 1412 wrote to memory of 1368	1412	cmd.exe	112

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 use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 452
  2⤵
  - Program crash
  PID:2096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 772
  2⤵
  - Program crash
  PID:4064
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 808
  2⤵
  - Program crash
  PID:5008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 808
  2⤵
  - Program crash
  PID:3512
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 788
  2⤵
  - Program crash
  PID:1384
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 928
  2⤵
  - Program crash
  PID:4640
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 1004
  2⤵
  - Program crash
  PID:3012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 1056
  2⤵
  - Program crash
  PID:1932
- C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\MhT3Jp8.exe
  2⤵
  - Executes dropped EXE
  PID:1996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 1456
  2⤵
  - Program crash
  PID:3772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /im "file.exe" /f & erase "C:\Users\Admin\AppData\Local\Temp\file.exe" & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1412
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /im "file.exe" /f
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 520
  2⤵
  - Program crash
  PID:2300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2520 -ip 2520
1⤵
PID:1096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 2520 -ip 2520
1⤵
PID:1928

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2520 -ip 2520
1⤵
PID:3852

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 2520 -ip 2520
1⤵
PID:3520

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2520 -ip 2520
1⤵
PID:3696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2520 -ip 2520
1⤵
PID:2848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 2520 -ip 2520
1⤵
PID:3496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 576 -p 2520 -ip 2520
1⤵
PID:4804

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 2520 -ip 2520
1⤵
PID:4216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 584 -p 2520 -ip 2520
1⤵
PID:2448

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\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\MhT3Jp8.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\MhT3Jp8.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/2520-138-0x00000000006ED000-0x000000000071E000-memory.dmp

Filesize
196KB

Download
memory/2520-132-0x00000000006ED000-0x000000000071E000-memory.dmp

Filesize
196KB

Download
memory/2520-139-0x00000000005E0000-0x0000000000633000-memory.dmp

Filesize
332KB

Download
memory/2520-140-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2520-141-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/2520-134-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download
memory/2520-133-0x00000000005E0000-0x0000000000633000-memory.dmp

Filesize
332KB

Download
memory/2520-147-0x00000000006ED000-0x000000000071E000-memory.dmp

Filesize
196KB

Download
memory/2520-148-0x0000000000400000-0x0000000000468000-memory.dmp

Filesize
416KB

Download

Analysis

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