nymaim | 09e8a4b4347c791fd68278b4ae2fc230c97753d3f181e5944cb9a0ad9a85048b

General

Target

file.exe
Size

1.5MB
MD5

5f6c5e6131374258fa9ca26119c3686f
SHA1

07b1b1ad90a4faa69c02b685ebeaee488b4d23c3
SHA256

09e8a4b4347c791fd68278b4ae2fc230c97753d3f181e5944cb9a0ad9a85048b
SHA512

5c9e247a618eb80623335469dfb5f22d43256f6d00c72913d0beabc70fe03ddd8fcb6ea544f8bd30b736255f0163193b3dfa6e35c359daa57b6259268f9561cb
SSDEEP

24576:220Sx+iJe+tbKbqdaW56kfoOO1hDZs/Os4ciZOWgXC75ld1qSVpk:228itG+bfQ15Zs2CiMSd1qapk

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

45.139.105.171

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 3 IoCs

Processes:

file.tmpMitFiles138.exep3jEQF.exe

pid process

4380 file.tmp
4340 MitFiles138.exe
4304 p3jEQF.exe

pid	process
4380	file.tmp
4340	MitFiles138.exe
4304	p3jEQF.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

Processes:

MitFiles138.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	MitFiles138.exe

Loads dropped DLL 1 IoCs

Processes:

file.tmp

pid process

4380 file.tmp
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

pid	process
4380	file.tmp

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Mit Files\is-169OV.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-VQ96G.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-M8T0C.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-2BHGH.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\MitFiles138.exe	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-N7FNG.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-GPCJI.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-G1Q3C.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-UNCMF.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-HTUPI.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-7U6P8.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-GEAJE.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-J80A0.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-NI2AU.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-JR1N4.tmp	file.tmp

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

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

3864 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

MitFiles138.exe

pid process

4340 MitFiles138.exe
4340 MitFiles138.exe
4340 MitFiles138.exe
4340 MitFiles138.exe
4340 MitFiles138.exe
4340 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 3864 taskkill.exe

pid	process
3864	taskkill.exe

pid	process
4340	MitFiles138.exe
4340	MitFiles138.exe
4340	MitFiles138.exe
4340	MitFiles138.exe
4340	MitFiles138.exe
4340	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	3864	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1264 wrote to memory of 4380	1264	file.exe	file.tmp
PID 1264 wrote to memory of 4380	1264	file.exe	file.tmp
PID 1264 wrote to memory of 4380	1264	file.exe	file.tmp
PID 4380 wrote to memory of 4340	4380	file.tmp	MitFiles138.exe
PID 4380 wrote to memory of 4340	4380	file.tmp	MitFiles138.exe
PID 4380 wrote to memory of 4340	4380	file.tmp	MitFiles138.exe
PID 4340 wrote to memory of 4304	4340	MitFiles138.exe	p3jEQF.exe
PID 4340 wrote to memory of 4304	4340	MitFiles138.exe	p3jEQF.exe
PID 4340 wrote to memory of 4304	4340	MitFiles138.exe	p3jEQF.exe
PID 4340 wrote to memory of 3664	4340	MitFiles138.exe	cmd.exe
PID 4340 wrote to memory of 3664	4340	MitFiles138.exe	cmd.exe
PID 4340 wrote to memory of 3664	4340	MitFiles138.exe	cmd.exe
PID 3664 wrote to memory of 3864	3664	cmd.exe	taskkill.exe
PID 3664 wrote to memory of 3864	3664	cmd.exe	taskkill.exe
PID 3664 wrote to memory of 3864	3664	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1264
- C:\Users\Admin\AppData\Local\Temp\is-R6047.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-R6047.tmp\file.tmp" /SL5="$601E2,1327795,483328,C:\Users\Admin\AppData\Local\Temp\file.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of WriteProcessMemory
  PID:4380
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4340
  - - C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\p3jEQF.exe
      4⤵
      Executes dropped EXE
      PID:4304
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "MitFiles138.exe" /f & erase "C:\Program Files (x86)\Mit Files\MitFiles138.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3664
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3864

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
555d4779cda3506d8cce83be1b75e554

SHA1
5206c9a60d1266daad1864b3e5ac730c7884dc5c

SHA256
5a6bac98c7cd19f6ce582eab6bf24618e8b3a6268f0c70db566fd467ed9922bd

SHA512
85de2cb4fce71ed3ffaee8e5c4b0ad12394c99cbb2d25a9ae0d1d4c625066c8580fedf368dc0530a45f9c60611f253c2244aba427149753d68de16d09f9ec668

Download Submit
C:\Program Files (x86)\Mit Files\MitFiles138.exe

Filesize
1.8MB

MD5
555d4779cda3506d8cce83be1b75e554

SHA1
5206c9a60d1266daad1864b3e5ac730c7884dc5c

SHA256
5a6bac98c7cd19f6ce582eab6bf24618e8b3a6268f0c70db566fd467ed9922bd

SHA512
85de2cb4fce71ed3ffaee8e5c4b0ad12394c99cbb2d25a9ae0d1d4c625066c8580fedf368dc0530a45f9c60611f253c2244aba427149753d68de16d09f9ec668

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-7FA7F.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-R6047.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-R6047.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\p3jEQF.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{1ca2f389-1ab8-11ed-aebb-806e6f6e6963}\p3jEQF.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1264-148-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1264-132-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1264-157-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1264-137-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/3664-154-0x0000000000000000-mapping.dmp

Download
memory/3864-155-0x0000000000000000-mapping.dmp

Download
memory/4304-145-0x0000000000000000-mapping.dmp

Download
memory/4340-150-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4340-149-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4340-139-0x0000000000000000-mapping.dmp

Download
memory/4340-144-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4340-143-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4340-156-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4340-142-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4380-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads