nymaim | 99a09118d89325ac077fa605dba185b4d93b48406fe0789fd89ac249acb47a0f

Analysis

max time kernel
52s
max time network
54s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
13-01-2023 08:18

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General

Target

file.exe
Size

1.3MB
MD5

5b266f10f2f41de6fc3172cc6ef7fdaa
SHA1

587b33ef4bf17e4850371b27e2d210023cb70ce7
SHA256

99a09118d89325ac077fa605dba185b4d93b48406fe0789fd89ac249acb47a0f
SHA512

01e6fc8095104e092434cfcdd5445898a232aa0fdb5ecb1756f00d580b30b6d45be7a83fa85dd0109f671da48c017b88c6b43e4057769954e29c94729a91895f
SSDEEP

24576:g20hhVUcxZKdEOWIn8TyJ9MXbbGSuMx5NEYf+kATuCqtn/:g2QVfEdDWb48GSuaHykATuCE/

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

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.tmpNitFiles451.exedKxYnguZ.exe

pid process

2032 file.tmp
1000 NitFiles451.exe
1092 dKxYnguZ.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpNitFiles451.exe

pid process

1748 file.exe
2032 file.tmp
2032 file.tmp
2032 file.tmp
2032 file.tmp
1000 NitFiles451.exe
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
2032	file.tmp
1000	NitFiles451.exe
1092	dKxYnguZ.exe

pid	process
1748	file.exe
2032	file.tmp
2032	file.tmp
2032	file.tmp
2032	file.tmp
1000	NitFiles451.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Nit Files\language\is-T7QST.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-DEHEU.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-4B973.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\NitFiles451.exe	file.tmp
File created	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-TT8VG.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-CO636.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-DE299.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-FJOKQ.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-S46AH.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-KQ00C.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-RD818.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-PUU4O.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-IHRQ7.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-M9C28.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-IEJVD.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	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

556 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

NitFiles451.exe

pid process

1000 NitFiles451.exe
1000 NitFiles451.exe
1000 NitFiles451.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 556 taskkill.exe

pid	process
556	taskkill.exe

pid	process
1000	NitFiles451.exe
1000	NitFiles451.exe
1000	NitFiles451.exe

description	pid	process
Token: SeDebugPrivilege	556	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	process	target process
PID 1748 wrote to memory of 2032	1748	file.exe	file.tmp
PID 1748 wrote to memory of 2032	1748	file.exe	file.tmp
PID 1748 wrote to memory of 2032	1748	file.exe	file.tmp
PID 1748 wrote to memory of 2032	1748	file.exe	file.tmp
PID 1748 wrote to memory of 2032	1748	file.exe	file.tmp
PID 1748 wrote to memory of 2032	1748	file.exe	file.tmp
PID 1748 wrote to memory of 2032	1748	file.exe	file.tmp
PID 2032 wrote to memory of 1000	2032	file.tmp	NitFiles451.exe
PID 2032 wrote to memory of 1000	2032	file.tmp	NitFiles451.exe
PID 2032 wrote to memory of 1000	2032	file.tmp	NitFiles451.exe
PID 2032 wrote to memory of 1000	2032	file.tmp	NitFiles451.exe
PID 1000 wrote to memory of 1092	1000	NitFiles451.exe	dKxYnguZ.exe
PID 1000 wrote to memory of 1092	1000	NitFiles451.exe	dKxYnguZ.exe
PID 1000 wrote to memory of 1092	1000	NitFiles451.exe	dKxYnguZ.exe
PID 1000 wrote to memory of 1092	1000	NitFiles451.exe	dKxYnguZ.exe
PID 1000 wrote to memory of 772	1000	NitFiles451.exe	cmd.exe
PID 1000 wrote to memory of 772	1000	NitFiles451.exe	cmd.exe
PID 1000 wrote to memory of 772	1000	NitFiles451.exe	cmd.exe
PID 1000 wrote to memory of 772	1000	NitFiles451.exe	cmd.exe
PID 772 wrote to memory of 556	772	cmd.exe	taskkill.exe
PID 772 wrote to memory of 556	772	cmd.exe	taskkill.exe
PID 772 wrote to memory of 556	772	cmd.exe	taskkill.exe
PID 772 wrote to memory of 556	772	cmd.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1748
- C:\Users\Admin\AppData\Local\Temp\is-VA2JC.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-VA2JC.tmp\file.tmp" /SL5="$70122,1111934,233984,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:2032
- - C:\Program Files (x86)\Nit Files\NitFiles451.exe
    "C:\Program Files (x86)\Nit Files\NitFiles451.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1000
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dKxYnguZ.exe
      4⤵
      Executes dropped EXE
      PID:1092
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "NitFiles451.exe" /f & erase "C:\Program Files (x86)\Nit Files\NitFiles451.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:772
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:556

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
cba7c7f1b4e9e1b3521b05d03187083d

SHA1
4cf0231286e2d0c67c025fa83bf51b0f43ec35a2

SHA256
9bf1aabcc1afbac2bbfb7b919bc33f55777588ffe61c86b434a159ee2af1e177

SHA512
68a53756963f1fbd48320f8485d472bf77de04f0af55969f8c2f4419c098803d3f8daa0d50bdc080b7ab045a5c340ae2d7009ebc8a3a48a123fc0ca66bb93e34

Download Submit
C:\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
cba7c7f1b4e9e1b3521b05d03187083d

SHA1
4cf0231286e2d0c67c025fa83bf51b0f43ec35a2

SHA256
9bf1aabcc1afbac2bbfb7b919bc33f55777588ffe61c86b434a159ee2af1e177

SHA512
68a53756963f1fbd48320f8485d472bf77de04f0af55969f8c2f4419c098803d3f8daa0d50bdc080b7ab045a5c340ae2d7009ebc8a3a48a123fc0ca66bb93e34

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VA2JC.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VA2JC.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dKxYnguZ.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Nit Files\NitFiles451.exe

Filesize
1.9MB

MD5
cba7c7f1b4e9e1b3521b05d03187083d

SHA1
4cf0231286e2d0c67c025fa83bf51b0f43ec35a2

SHA256
9bf1aabcc1afbac2bbfb7b919bc33f55777588ffe61c86b434a159ee2af1e177

SHA512
68a53756963f1fbd48320f8485d472bf77de04f0af55969f8c2f4419c098803d3f8daa0d50bdc080b7ab045a5c340ae2d7009ebc8a3a48a123fc0ca66bb93e34

Download Submit
\Users\Admin\AppData\Local\Temp\is-4PECQ.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-4PECQ.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-4PECQ.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-VA2JC.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\dKxYnguZ.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/556-83-0x0000000000000000-mapping.dmp

Download
memory/772-82-0x0000000000000000-mapping.dmp

Download
memory/1000-66-0x0000000000000000-mapping.dmp

Download
memory/1000-71-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1000-72-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1000-73-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1000-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1000-81-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1000-84-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1092-75-0x0000000000000000-mapping.dmp

Download
memory/1748-54-0x0000000076381000-0x0000000076383000-memory.dmp

Filesize
8KB

Download
memory/1748-69-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1748-85-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/1748-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/2032-70-0x0000000003610000-0x00000000045F9000-memory.dmp

Filesize
15.9MB

Download
memory/2032-58-0x0000000000000000-mapping.dmp

Download