nymaim | 2cfbc02e7d51a05a7fc6df05a436402a139d19bfc0df1acee0c2e579fe9ccc17

Resubmissions

11-07-2023 09:51

230711-lvjv1ahc5x 10

13-01-2023 11:37

13-01-2023 11:32

13-01-2023 11:26

13-01-2023 11:18

Analysis

max time kernel
55s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
13-01-2023 11:18

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General

Target

file.exe
Size

1.4MB
MD5

20be3aa04cabb748cbbcd0da280b8a8c
SHA1

a7cc015a91391d8e6079ce405ad904b533c98851
SHA256

2cfbc02e7d51a05a7fc6df05a436402a139d19bfc0df1acee0c2e579fe9ccc17
SHA512

d7960e99a79237ada2460016ded9487250e7415798fce335efb3bbd59ec583d761c4b7c8c3f36e54d36cda848a5ffd51ced33a5471ab3c5e5f20223ccdbd18d6
SSDEEP

24576:g20hhV6hpivqbb1q6oJ/E9qSnfVUnEdqDs42A+SO0Zavpcjdrc9Yf+kATuCqtn/:g2QVMpVv19fVRcjmhcjdQkATuCE/

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.exeC9wBa.exe

pid process

1004 file.tmp
1320 NitFiles451.exe
1300 C9wBa.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpNitFiles451.exe

pid process

904 file.exe
1004 file.tmp
1004 file.tmp
1004 file.tmp
1004 file.tmp
1320 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
1004	file.tmp
1320	NitFiles451.exe
1300	C9wBa.exe

pid	process
904	file.exe
1004	file.tmp
1004	file.tmp
1004	file.tmp
1004	file.tmp
1320	NitFiles451.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Nit Files\is-SHVQN.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\language\is-E5KP9.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-I71IJ.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-RCETK.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-V5A01.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Nit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-VC407.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-SA8F1.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-7E8DT.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-PJHTC.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-H10R9.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\language\is-9V241.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-N9J4D.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-87HJF.tmp	file.tmp
File created	C:\Program Files (x86)\Nit Files\is-K95SV.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

2008 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

NitFiles451.exe

pid process

1320 NitFiles451.exe
1320 NitFiles451.exe
1320 NitFiles451.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 2008 taskkill.exe

pid	process
2008	taskkill.exe

pid	process
1320	NitFiles451.exe
1320	NitFiles451.exe
1320	NitFiles451.exe

description	pid	process
Token: SeDebugPrivilege	2008	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpNitFiles451.execmd.exe

description	pid	process	target process
PID 904 wrote to memory of 1004	904	file.exe	file.tmp
PID 904 wrote to memory of 1004	904	file.exe	file.tmp
PID 904 wrote to memory of 1004	904	file.exe	file.tmp
PID 904 wrote to memory of 1004	904	file.exe	file.tmp
PID 904 wrote to memory of 1004	904	file.exe	file.tmp
PID 904 wrote to memory of 1004	904	file.exe	file.tmp
PID 904 wrote to memory of 1004	904	file.exe	file.tmp
PID 1004 wrote to memory of 1320	1004	file.tmp	NitFiles451.exe
PID 1004 wrote to memory of 1320	1004	file.tmp	NitFiles451.exe
PID 1004 wrote to memory of 1320	1004	file.tmp	NitFiles451.exe
PID 1004 wrote to memory of 1320	1004	file.tmp	NitFiles451.exe
PID 1320 wrote to memory of 1300	1320	NitFiles451.exe	C9wBa.exe
PID 1320 wrote to memory of 1300	1320	NitFiles451.exe	C9wBa.exe
PID 1320 wrote to memory of 1300	1320	NitFiles451.exe	C9wBa.exe
PID 1320 wrote to memory of 1300	1320	NitFiles451.exe	C9wBa.exe
PID 1320 wrote to memory of 780	1320	NitFiles451.exe	cmd.exe
PID 1320 wrote to memory of 780	1320	NitFiles451.exe	cmd.exe
PID 1320 wrote to memory of 780	1320	NitFiles451.exe	cmd.exe
PID 1320 wrote to memory of 780	1320	NitFiles451.exe	cmd.exe
PID 780 wrote to memory of 2008	780	cmd.exe	taskkill.exe
PID 780 wrote to memory of 2008	780	cmd.exe	taskkill.exe
PID 780 wrote to memory of 2008	780	cmd.exe	taskkill.exe
PID 780 wrote to memory of 2008	780	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:904
- C:\Users\Admin\AppData\Local\Temp\is-U397P.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-U397P.tmp\file.tmp" /SL5="$60124,1144907,233984,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:1004
- - 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:1320
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\C9wBa.exe
      4⤵
      Executes dropped EXE
      PID:1300
  - - 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:780
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "NitFiles451.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2008

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
e37c93f5fbb9eea1edc3bffcf97b5a6b

SHA1
3bdd4bc90e523175c1979765ea432b3c07c8ec8f

SHA256
8b280360fea780eea88243e823addddffd92584ab48cb10595778e6ea81bd634

SHA512
3dadbf322f0e18b4908f64009181af7918c7f552d30be9c5b837cfb1fe83934536e72c9991a53432a944b6dea9dd062cb4ead7d3f4c19a19a211a00aaf95ff6e

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

Filesize
1.9MB

MD5
e37c93f5fbb9eea1edc3bffcf97b5a6b

SHA1
3bdd4bc90e523175c1979765ea432b3c07c8ec8f

SHA256
8b280360fea780eea88243e823addddffd92584ab48cb10595778e6ea81bd634

SHA512
3dadbf322f0e18b4908f64009181af7918c7f552d30be9c5b837cfb1fe83934536e72c9991a53432a944b6dea9dd062cb4ead7d3f4c19a19a211a00aaf95ff6e

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-U397P.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-U397P.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}\C9wBa.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
1.9MB

MD5
e37c93f5fbb9eea1edc3bffcf97b5a6b

SHA1
3bdd4bc90e523175c1979765ea432b3c07c8ec8f

SHA256
8b280360fea780eea88243e823addddffd92584ab48cb10595778e6ea81bd634

SHA512
3dadbf322f0e18b4908f64009181af7918c7f552d30be9c5b837cfb1fe83934536e72c9991a53432a944b6dea9dd062cb4ead7d3f4c19a19a211a00aaf95ff6e

Download Submit
\Users\Admin\AppData\Local\Temp\is-0I88F.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-0I88F.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-0I88F.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-U397P.tmp\file.tmp

Filesize
849KB

MD5
56c525b0e7751035562a3bd35096b17d

SHA1
befb8a8e73e296e95412b319bc20f76fb382d525

SHA256
6fbb6401d3de1f971f182f9292e817fbeee537725cd5a5974b2bd7bd90a26559

SHA512
75e793a12229ac68cc5ed92d97c1db55dbeb1712cb5377fc2323363e4ffd026f2e68c7852fa0eb6837c8ba7f5449a70160c3cadb49c062c4dc53cdbccdf6d354

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\C9wBa.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/780-83-0x0000000000000000-mapping.dmp

Download
memory/904-86-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/904-55-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/904-69-0x0000000000400000-0x0000000000440000-memory.dmp

Filesize
256KB

Download
memory/904-54-0x0000000075E11000-0x0000000075E13000-memory.dmp

Filesize
8KB

Download
memory/1004-81-0x0000000003690000-0x0000000004679000-memory.dmp

Filesize
15.9MB

Download
memory/1004-70-0x0000000003690000-0x0000000004679000-memory.dmp

Filesize
15.9MB

Download
memory/1004-58-0x0000000000000000-mapping.dmp

Download
memory/1300-75-0x0000000000000000-mapping.dmp

Download
memory/1320-73-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1320-72-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1320-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1320-71-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1320-82-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1320-85-0x0000000000400000-0x00000000013E9000-memory.dmp

Filesize
15.9MB

Download
memory/1320-66-0x0000000000000000-mapping.dmp

Download
memory/2008-84-0x0000000000000000-mapping.dmp

Download