nymaim | f024d3acc4cef8080a4a6c8c5cc7653b2cb1d08492ca9d2bb3e6abe7d20239b9

Analysis

max time kernel
56s
max time network
58s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
07/01/2023, 23:17

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General

Target

file.exe
Size

2.1MB
MD5

70155167288235365eed39444c43af41
SHA1

7fc56d2443323a6677a89ca9e2427b99e41416f1
SHA256

f024d3acc4cef8080a4a6c8c5cc7653b2cb1d08492ca9d2bb3e6abe7d20239b9
SHA512

2bbd759bc0084d8860d5db1ff092619fd2899a0aec02452aea08daebc5a2225c4fc6ada63d0652fcfa7f1d418f23262ea4be014f62f1392177edf048de907afe
SSDEEP

49152:L26LLGtTLtNYHaZ1oY6hoDNKMUpdhFuV3Y11C:C6LLwnta6P+hoB2FuVo1k

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

pid	Process
1004	file.tmp
1320	LitFiles133.exe
1300	94tczeiNS8evp.exe

Loads dropped DLL 6 IoCs

pid	Process
904	file.exe
1004	file.tmp
1004	file.tmp
1004	file.tmp
1004	file.tmp
1320	LitFiles133.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

Drops file in Program Files directory 17 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Split Files\language\is-9EQKF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-VQK3V.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-6CNEF.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-ISSPN.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-1H1UH.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-7QTD6.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-86IBD.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-LGG85.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-J0CJT.tmp	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File opened for modification	C:\Program Files (x86)\Split Files\LitFiles133.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\is-8DHAR.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-8FIBD.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-FV0TN.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-F4A08.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-8JOML.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
332	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1320	LitFiles133.exe
1320	LitFiles133.exe
1320	LitFiles133.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	332	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 904 wrote to memory of 1004	904	file.exe	27
PID 904 wrote to memory of 1004	904	file.exe	27
PID 904 wrote to memory of 1004	904	file.exe	27
PID 904 wrote to memory of 1004	904	file.exe	27
PID 904 wrote to memory of 1004	904	file.exe	27
PID 904 wrote to memory of 1004	904	file.exe	27
PID 904 wrote to memory of 1004	904	file.exe	27
PID 1004 wrote to memory of 1320	1004	file.tmp	28
PID 1004 wrote to memory of 1320	1004	file.tmp	28
PID 1004 wrote to memory of 1320	1004	file.tmp	28
PID 1004 wrote to memory of 1320	1004	file.tmp	28
PID 1320 wrote to memory of 1300	1320	LitFiles133.exe	29
PID 1320 wrote to memory of 1300	1320	LitFiles133.exe	29
PID 1320 wrote to memory of 1300	1320	LitFiles133.exe	29
PID 1320 wrote to memory of 1300	1320	LitFiles133.exe	29
PID 1320 wrote to memory of 780	1320	LitFiles133.exe	32
PID 1320 wrote to memory of 780	1320	LitFiles133.exe	32
PID 1320 wrote to memory of 780	1320	LitFiles133.exe	32
PID 1320 wrote to memory of 780	1320	LitFiles133.exe	32
PID 780 wrote to memory of 332	780	cmd.exe	34
PID 780 wrote to memory of 332	780	cmd.exe	34
PID 780 wrote to memory of 332	780	cmd.exe	34
PID 780 wrote to memory of 332	780	cmd.exe	34

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-VUBA6.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-VUBA6.tmp\file.tmp" /SL5="$60124,1895507,182784,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)\Split Files\LitFiles133.exe
    "C:\Program Files (x86)\Split Files\LitFiles133.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}\94tczeiNS8evp.exe
      4⤵
      Executes dropped EXE
      PID:1300
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles133.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles133.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:780
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles133.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:332

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)\Split Files\LitFiles133.exe

Filesize
3.4MB

MD5
21f28a23825627355b72e0d5682ee024

SHA1
4f4b1c53dad7c12f9ea7a03bc2a84df2c0eb66c2

SHA256
40461cb8caf21979ac61814092bb617af485f591dfe3bdc4005acd02ee09d0ba

SHA512
27a3686862055c148cac0bfd19c15688243cf8d851e6b2343421a895157e56d58b60b5ea66d61a611a7327d60911d8d716b8c0950b172e730c888e11908cdfcb

Download Submit
C:\Program Files (x86)\Split Files\LitFiles133.exe

Filesize
3.4MB

MD5
21f28a23825627355b72e0d5682ee024

SHA1
4f4b1c53dad7c12f9ea7a03bc2a84df2c0eb66c2

SHA256
40461cb8caf21979ac61814092bb617af485f591dfe3bdc4005acd02ee09d0ba

SHA512
27a3686862055c148cac0bfd19c15688243cf8d851e6b2343421a895157e56d58b60b5ea66d61a611a7327d60911d8d716b8c0950b172e730c888e11908cdfcb

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VUBA6.tmp\file.tmp

Filesize
820KB

MD5
c918c18c921ab538c31033c0a4478e51

SHA1
cc468af59f91bac824f994361d20c90edddf0604

SHA256
9c5872756fa6fb90c382f47a7d768237fad13c4464f0fe0996808c79ffc56e60

SHA512
fc9ced5ab7dfafc794606faf5ac426af67361ef3c30fbb6fd993c77abf2ee15cfd86f9913c89b0f36afa4b7decc748418ab18c4b72a1d885b0e8b1ab71d27c6b

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-VUBA6.tmp\file.tmp

Filesize
820KB

MD5
c918c18c921ab538c31033c0a4478e51

SHA1
cc468af59f91bac824f994361d20c90edddf0604

SHA256
9c5872756fa6fb90c382f47a7d768237fad13c4464f0fe0996808c79ffc56e60

SHA512
fc9ced5ab7dfafc794606faf5ac426af67361ef3c30fbb6fd993c77abf2ee15cfd86f9913c89b0f36afa4b7decc748418ab18c4b72a1d885b0e8b1ab71d27c6b

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\94tczeiNS8evp.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Split Files\LitFiles133.exe

Filesize
3.4MB

MD5
21f28a23825627355b72e0d5682ee024

SHA1
4f4b1c53dad7c12f9ea7a03bc2a84df2c0eb66c2

SHA256
40461cb8caf21979ac61814092bb617af485f591dfe3bdc4005acd02ee09d0ba

SHA512
27a3686862055c148cac0bfd19c15688243cf8d851e6b2343421a895157e56d58b60b5ea66d61a611a7327d60911d8d716b8c0950b172e730c888e11908cdfcb

Download Submit
\Users\Admin\AppData\Local\Temp\is-04HAA.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-04HAA.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-04HAA.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-VUBA6.tmp\file.tmp

Filesize
820KB

MD5
c918c18c921ab538c31033c0a4478e51

SHA1
cc468af59f91bac824f994361d20c90edddf0604

SHA256
9c5872756fa6fb90c382f47a7d768237fad13c4464f0fe0996808c79ffc56e60

SHA512
fc9ced5ab7dfafc794606faf5ac426af67361ef3c30fbb6fd993c77abf2ee15cfd86f9913c89b0f36afa4b7decc748418ab18c4b72a1d885b0e8b1ab71d27c6b

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\94tczeiNS8evp.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/904-68-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

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

Filesize
8KB

Download
memory/904-55-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/904-85-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/1004-69-0x00000000035D0000-0x0000000004734000-memory.dmp

Filesize
17.4MB

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

Filesize
108KB

Download
memory/1320-81-0x0000000000400000-0x0000000001564000-memory.dmp

Filesize
17.4MB

Download
memory/1320-70-0x0000000000400000-0x0000000001564000-memory.dmp

Filesize
17.4MB

Download
memory/1320-84-0x0000000000400000-0x0000000001564000-memory.dmp

Filesize
17.4MB

Download
memory/1320-73-0x0000000000400000-0x0000000001564000-memory.dmp

Filesize
17.4MB

Download
memory/1320-71-0x0000000000400000-0x0000000001564000-memory.dmp

Filesize
17.4MB

Download