nymaim | f386a12fa695b9659cd3dc04e4e8d526b42e896b561a1ace96d34e254b8a4793

General

Target

file.exe
Size

1.2MB
MD5

ab56ee6ef0663b01ebb68a1b02025618
SHA1

b7a7b416dae99db471f4aa1d2baf1cf99384450b
SHA256

f386a12fa695b9659cd3dc04e4e8d526b42e896b561a1ace96d34e254b8a4793
SHA512

5aeafad3ea1285be422da5260ba31f3720054513d8c315483f2b5b69cd05429d05c9fc12b4d320fea43492b5fbe99b2976c400dca44c9f1e11f416bbb48c8b49
SSDEEP

24576:q20IYNMeV85KNyJZP7lMm0DMPVBZ0fn5ojE2C49cLagXC75ld1qSVpk:q2m7V85KN4ZP7l+DMNBZ0RIE2C+d1qai

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.tmpLitFiles137.exeipXJqK5j.exe

pid process

2100 file.tmp
4928 LitFiles137.exe
3032 ipXJqK5j.exe

pid	process
2100	file.tmp
4928	LitFiles137.exe
3032	ipXJqK5j.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:

LitFiles137.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	LitFiles137.exe

Loads dropped DLL 1 IoCs

Processes:

file.tmp

pid process

2100 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
2100	file.tmp

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Split Files\language\is-KRLLL.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-U5NBF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-IMB9N.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-JG0M9.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-4BC16.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-GPH4C.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-K2E1J.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\LitFiles137.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-A0838.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-ED761.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-K3U71.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\is-MFLCO.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-OGTB7.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-EBEC9.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-4U8CT.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

1312 taskkill.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

LitFiles137.exe

pid process

4928 LitFiles137.exe
4928 LitFiles137.exe
4928 LitFiles137.exe
4928 LitFiles137.exe
4928 LitFiles137.exe
4928 LitFiles137.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1312 taskkill.exe

pid	process
1312	taskkill.exe

pid	process
4928	LitFiles137.exe
4928	LitFiles137.exe
4928	LitFiles137.exe
4928	LitFiles137.exe
4928	LitFiles137.exe
4928	LitFiles137.exe

description	pid	process
Token: SeDebugPrivilege	1312	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

file.exefile.tmpLitFiles137.execmd.exe

description	pid	process	target process
PID 3640 wrote to memory of 2100	3640	file.exe	file.tmp
PID 3640 wrote to memory of 2100	3640	file.exe	file.tmp
PID 3640 wrote to memory of 2100	3640	file.exe	file.tmp
PID 2100 wrote to memory of 4928	2100	file.tmp	LitFiles137.exe
PID 2100 wrote to memory of 4928	2100	file.tmp	LitFiles137.exe
PID 2100 wrote to memory of 4928	2100	file.tmp	LitFiles137.exe
PID 4928 wrote to memory of 3032	4928	LitFiles137.exe	ipXJqK5j.exe
PID 4928 wrote to memory of 3032	4928	LitFiles137.exe	ipXJqK5j.exe
PID 4928 wrote to memory of 3032	4928	LitFiles137.exe	ipXJqK5j.exe
PID 4928 wrote to memory of 2680	4928	LitFiles137.exe	cmd.exe
PID 4928 wrote to memory of 2680	4928	LitFiles137.exe	cmd.exe
PID 4928 wrote to memory of 2680	4928	LitFiles137.exe	cmd.exe
PID 2680 wrote to memory of 1312	2680	cmd.exe	taskkill.exe
PID 2680 wrote to memory of 1312	2680	cmd.exe	taskkill.exe
PID 2680 wrote to memory of 1312	2680	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:3640
- C:\Users\Admin\AppData\Local\Temp\is-9841A.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-9841A.tmp\file.tmp" /SL5="$8016E,1058313,212992,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:2100
- - C:\Program Files (x86)\Split Files\LitFiles137.exe
    "C:\Program Files (x86)\Split Files\LitFiles137.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:4928
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\ipXJqK5j.exe
      4⤵
      Executes dropped EXE
      PID:3032
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles137.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles137.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2680
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1312

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

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Downloads

C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
19b92bd9f2f8857c7ff247f8bf7e65dd

SHA1
73508c8278c3a8ba9fa797e65d00f6cee9657f88

SHA256
4dd7f90458e5274b7a1b8c3bd99e9695def866db7be79851bb31c3605734aea1

SHA512
125aa5471669efbc624cc7eaaeebf3a3f098886276c211facabb68b47ede4398269f3192ecbea94bbcf54612a578e4cccd76df0dcd37fbc308d4aa20f27a285c

Download Submit
C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
19b92bd9f2f8857c7ff247f8bf7e65dd

SHA1
73508c8278c3a8ba9fa797e65d00f6cee9657f88

SHA256
4dd7f90458e5274b7a1b8c3bd99e9695def866db7be79851bb31c3605734aea1

SHA512
125aa5471669efbc624cc7eaaeebf3a3f098886276c211facabb68b47ede4398269f3192ecbea94bbcf54612a578e4cccd76df0dcd37fbc308d4aa20f27a285c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-0U4NA.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9841A.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-9841A.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\ipXJqK5j.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\ipXJqK5j.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1312-153-0x0000000000000000-mapping.dmp

Download
memory/2100-134-0x0000000000000000-mapping.dmp

Download
memory/2680-152-0x0000000000000000-mapping.dmp

Download
memory/3032-144-0x0000000000000000-mapping.dmp

Download
memory/3640-138-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/3640-155-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/3640-132-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/4928-143-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4928-151-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4928-147-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/4928-142-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4928-154-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/4928-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads