nymaim | 30ce2a289af17da3dbf843504f6b29ad982a6d27bd975ae388d4945c32ead69a

General

Target

file.exe
Size

1.8MB
MD5

09f03021c386cf8843678f5f696c3fea
SHA1

2e408400e6c2ad3af3fda22676aff6bd68d3f78c
SHA256

30ce2a289af17da3dbf843504f6b29ad982a6d27bd975ae388d4945c32ead69a
SHA512

bbf2eda9eb91d93e48bc621d1d43d9f4fcfba3e281d32916013a1e65c6c2faf5aece49283d385f1439373049f424a1212610b794d38076077ee08d6841f0c475
SSDEEP

49152:y2+aV9XqTcrT+5AwpUCImBlNfwzOAo2I/m/WahOVLH:jN9aIfoZUCImOt/JhOVLH

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

pid	Process
4056	file.tmp
3764	HitFiles134.exe
4192	jag476.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-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	HitFiles134.exe

Loads dropped DLL 1 IoCs

pid	Process
4056	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

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Split Files\is-R2I98.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-ODKVF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-NFVR0.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-EU20D.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\HitFiles134.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-4OQLQ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-GT7LT.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-7HRHB.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-L9GC8.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\is-HLJ75.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-MTB1E.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-EVLVJ.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-KSJVM.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-5JAHT.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-2SSKH.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

pid	Process
3888	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3764	HitFiles134.exe
3764	HitFiles134.exe
3764	HitFiles134.exe
3764	HitFiles134.exe
3764	HitFiles134.exe
3764	HitFiles134.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3888	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4384 wrote to memory of 4056	4384	file.exe	80
PID 4384 wrote to memory of 4056	4384	file.exe	80
PID 4384 wrote to memory of 4056	4384	file.exe	80
PID 4056 wrote to memory of 3764	4056	file.tmp	81
PID 4056 wrote to memory of 3764	4056	file.tmp	81
PID 4056 wrote to memory of 3764	4056	file.tmp	81
PID 3764 wrote to memory of 4192	3764	HitFiles134.exe	82
PID 3764 wrote to memory of 4192	3764	HitFiles134.exe	82
PID 3764 wrote to memory of 4192	3764	HitFiles134.exe	82
PID 3764 wrote to memory of 4836	3764	HitFiles134.exe	90
PID 3764 wrote to memory of 4836	3764	HitFiles134.exe	90
PID 3764 wrote to memory of 4836	3764	HitFiles134.exe	90
PID 4836 wrote to memory of 3888	4836	cmd.exe	92
PID 4836 wrote to memory of 3888	4836	cmd.exe	92
PID 4836 wrote to memory of 3888	4836	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4384
- C:\Users\Admin\AppData\Local\Temp\is-HL1BC.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-HL1BC.tmp\file.tmp" /SL5="$A0040,1646686,162304,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:4056
- - C:\Program Files (x86)\Split Files\HitFiles134.exe
    "C:\Program Files (x86)\Split Files\HitFiles134.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:3764
  - - C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\jag476.exe
      4⤵
      Executes dropped EXE
      PID:4192
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "HitFiles134.exe" /f & erase "C:\Program Files (x86)\Split Files\HitFiles134.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4836
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "HitFiles134.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3888

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

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Downloads

C:\Program Files (x86)\Split Files\HitFiles134.exe

Filesize
3.2MB

MD5
8c332fbd947bdf4de19519280fbc0bc3

SHA1
e198eb41b04d5d5d6d42451d28113b3370b54b65

SHA256
d0786b49998fc90d0ba53e5760d8fcb901c80d28d13cd06d09a270c9b98369b9

SHA512
f802f5b46c4a43f7020c4f2a87fc3cdef2ca94d9b35d17a3d88a24bb39cc5070999baa4c9886787f2a715c554d5b1fd718a5c0addc79694c4e213f095b6e81cb

Download Submit
C:\Program Files (x86)\Split Files\HitFiles134.exe

Filesize
3.2MB

MD5
8c332fbd947bdf4de19519280fbc0bc3

SHA1
e198eb41b04d5d5d6d42451d28113b3370b54b65

SHA256
d0786b49998fc90d0ba53e5760d8fcb901c80d28d13cd06d09a270c9b98369b9

SHA512
f802f5b46c4a43f7020c4f2a87fc3cdef2ca94d9b35d17a3d88a24bb39cc5070999baa4c9886787f2a715c554d5b1fd718a5c0addc79694c4e213f095b6e81cb

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HL1BC.tmp\file.tmp

Filesize
800KB

MD5
7013a53c5472267941844ed17de4de3c

SHA1
dda886aa81995da2abb763969bba86e82988db1a

SHA256
9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

SHA512
6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HL1BC.tmp\file.tmp

Filesize
800KB

MD5
7013a53c5472267941844ed17de4de3c

SHA1
dda886aa81995da2abb763969bba86e82988db1a

SHA256
9897aed9da44b8a3c7d7cdeac2fdf2281bcd024846c77d45bc84b973abddc81e

SHA512
6b1e8845ffeda2a775370a89aaf7e7477cd6264df15da3cc7e412c282e0ccfb3719d6b08fc65190e61ec9674f5f527d939d9cd50ff9f29af37a049d04596060d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PD65D.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\jag476.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{d6dc608d-2a27-11ed-a0e3-806e6f6e6963}\jag476.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3764-143-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/3764-153-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/3764-142-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/3764-156-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/3764-144-0x0000000000400000-0x000000000152D000-memory.dmp

Filesize
17.2MB

Download
memory/3764-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4384-137-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4384-152-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4384-132-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4384-157-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download

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