nymaim | 148c859c6e59ea338fa2d5e1ecf071ebb042243bdb708d50d0dad97740e17e10

General

Target

file.exe
Size

1.7MB
MD5

dfa5aab1eb5ccbf962574dd0972a6da8
SHA1

7ed2cb8354e8a5c7a5624a73267bda3f5d5b56e8
SHA256

148c859c6e59ea338fa2d5e1ecf071ebb042243bdb708d50d0dad97740e17e10
SHA512

6a28e17490c5c2f8c6e79d133d6154f74b2505efd5f47675837e161e87fa23f88460977c67cdd465bad726630e3d1d6f2c52db6217d556ba53a4a8722a23c07a
SSDEEP

49152:228PznKeISJcAAy16Jzd7gR7phMC3rKd1qapk:PGznK38AySd20d1Zi

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
4924	file.tmp
3860	MitFiles138.exe
1536	aY54aALqS.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	MitFiles138.exe

Loads dropped DLL 1 IoCs

pid	Process
4924	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)\Mit Files\is-RPCHH.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-QO92D.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-3SSBU.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-2DBNS.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-JJ80R.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-6F3QG.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-VER4M.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-BKDOA.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-08VM5.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-7D6A6.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-PQ76M.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-DBROA.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-OBN0T.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-R7QR9.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
3836	taskkill.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3860	MitFiles138.exe
3860	MitFiles138.exe
3860	MitFiles138.exe
3860	MitFiles138.exe
3860	MitFiles138.exe
3860	MitFiles138.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3836	taskkill.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4912 wrote to memory of 4924	4912	file.exe	83
PID 4912 wrote to memory of 4924	4912	file.exe	83
PID 4912 wrote to memory of 4924	4912	file.exe	83
PID 4924 wrote to memory of 3860	4924	file.tmp	84
PID 4924 wrote to memory of 3860	4924	file.tmp	84
PID 4924 wrote to memory of 3860	4924	file.tmp	84
PID 3860 wrote to memory of 1536	3860	MitFiles138.exe	88
PID 3860 wrote to memory of 1536	3860	MitFiles138.exe	88
PID 3860 wrote to memory of 1536	3860	MitFiles138.exe	88
PID 3860 wrote to memory of 4532	3860	MitFiles138.exe	93
PID 3860 wrote to memory of 4532	3860	MitFiles138.exe	93
PID 3860 wrote to memory of 4532	3860	MitFiles138.exe	93
PID 4532 wrote to memory of 3836	4532	cmd.exe	95
PID 4532 wrote to memory of 3836	4532	cmd.exe	95
PID 4532 wrote to memory of 3836	4532	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4912
- C:\Users\Admin\AppData\Local\Temp\is-HS1H9.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-HS1H9.tmp\file.tmp" /SL5="$80060,1520496,483328,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:4924
- - 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:3860
  - - C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\aY54aALqS.exe
      4⤵
      Executes dropped EXE
      PID:1536
  - - 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:4532
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:3836

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)\Mit Files\MitFiles138.exe

Filesize
2.0MB

MD5
91cb85fee8e16efdb8ef3462001cedcc

SHA1
08ad31878927660efb2b2e849a60600f836a4e7f

SHA256
bfe7aaba0d996fb2a543bcbd879a98de4b9406f6cc65d4150308665b6cbc345a

SHA512
b0a7d8c2d94a9a5f412b237d1d9f21013a66090d385b112ea08d9c58c9824fac5b2957bdd03fe4c63d575f3dd7f97f85c73ade897f5d7fe4d6ae2769d8165c93

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

Filesize
2.0MB

MD5
91cb85fee8e16efdb8ef3462001cedcc

SHA1
08ad31878927660efb2b2e849a60600f836a4e7f

SHA256
bfe7aaba0d996fb2a543bcbd879a98de4b9406f6cc65d4150308665b6cbc345a

SHA512
b0a7d8c2d94a9a5f412b237d1d9f21013a66090d385b112ea08d9c58c9824fac5b2957bdd03fe4c63d575f3dd7f97f85c73ade897f5d7fe4d6ae2769d8165c93

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-8M672.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HS1H9.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-HS1H9.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}\aY54aALqS.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{6cebb340-6208-11ed-bf50-806e6f6e6963}\aY54aALqS.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/3860-143-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/3860-144-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/3860-142-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/3860-148-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/3860-153-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/3860-156-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/4912-132-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/4912-152-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/4912-134-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/4912-157-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download

Analysis

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