nymaim | 990417fee0ca96d32e10aef165be2744c69da233f410c25a92a3d6b13c0ca1bd

Analysis

max time kernel
52s
max time network
53s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 12:01

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General

Target

file.exe
Size

1.6MB
MD5

9bd9cf8b536cbce9c04f5e16b3ad67cd
SHA1

7f2a3ca1270b6a93b367ada51e5baff10a9b8d2b
SHA256

990417fee0ca96d32e10aef165be2744c69da233f410c25a92a3d6b13c0ca1bd
SHA512

3699fa15489802918fbad4cfbb3826384cf80cd1b2fb500c5035e6193d5cf84a9be1aecf7253143a0a05e67a968367d1662c3cb8d5e175893ef01a558b8a6cf9
SSDEEP

49152:228rkQkOTdkswBfm9NiI8JnQhkz+0CaBghd1qapk:PukHfsy0NiLI3aBghd1Zi

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.tmpMitFiles138.exereFJogN2kyVnt.exe

pid process

2036 file.tmp
836 MitFiles138.exe
752 reFJogN2kyVnt.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

1252 file.exe
2036 file.tmp
2036 file.tmp
2036 file.tmp
2036 file.tmp
836 MitFiles138.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
2036	file.tmp
836	MitFiles138.exe
752	reFJogN2kyVnt.exe

pid	process
1252	file.exe
2036	file.tmp
2036	file.tmp
2036	file.tmp
2036	file.tmp
836	MitFiles138.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Mit Files\language\is-4US7P.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-I8IOJ.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-H00DU.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-QR6K2.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-FPMME.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-OMS5I.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-57MFI.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-4SSON.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-4JF02.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-6DNDE.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-VNJUR.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-LIGPJ.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-PU5BI.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-G5NKK.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

1248 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

836 MitFiles138.exe
836 MitFiles138.exe
836 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1248 taskkill.exe

pid	process
1248	taskkill.exe

pid	process
836	MitFiles138.exe
836	MitFiles138.exe
836	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	1248	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1252 wrote to memory of 2036	1252	file.exe	file.tmp
PID 1252 wrote to memory of 2036	1252	file.exe	file.tmp
PID 1252 wrote to memory of 2036	1252	file.exe	file.tmp
PID 1252 wrote to memory of 2036	1252	file.exe	file.tmp
PID 1252 wrote to memory of 2036	1252	file.exe	file.tmp
PID 1252 wrote to memory of 2036	1252	file.exe	file.tmp
PID 1252 wrote to memory of 2036	1252	file.exe	file.tmp
PID 2036 wrote to memory of 836	2036	file.tmp	MitFiles138.exe
PID 2036 wrote to memory of 836	2036	file.tmp	MitFiles138.exe
PID 2036 wrote to memory of 836	2036	file.tmp	MitFiles138.exe
PID 2036 wrote to memory of 836	2036	file.tmp	MitFiles138.exe
PID 836 wrote to memory of 752	836	MitFiles138.exe	reFJogN2kyVnt.exe
PID 836 wrote to memory of 752	836	MitFiles138.exe	reFJogN2kyVnt.exe
PID 836 wrote to memory of 752	836	MitFiles138.exe	reFJogN2kyVnt.exe
PID 836 wrote to memory of 752	836	MitFiles138.exe	reFJogN2kyVnt.exe
PID 836 wrote to memory of 2012	836	MitFiles138.exe	cmd.exe
PID 836 wrote to memory of 2012	836	MitFiles138.exe	cmd.exe
PID 836 wrote to memory of 2012	836	MitFiles138.exe	cmd.exe
PID 836 wrote to memory of 2012	836	MitFiles138.exe	cmd.exe
PID 2012 wrote to memory of 1248	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1248	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1248	2012	cmd.exe	taskkill.exe
PID 2012 wrote to memory of 1248	2012	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:1252
- C:\Users\Admin\AppData\Local\Temp\is-330KR.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-330KR.tmp\file.tmp" /SL5="$70124,1478581,483328,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:2036
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:836
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\reFJogN2kyVnt.exe
      4⤵
      Executes dropped EXE
      PID:752
  - - 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:2012
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1248

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)\Mit Files\MitFiles138.exe

Filesize
1.9MB

MD5
e1e4c49610b23ef02de1b8216886e428

SHA1
47ee2260f7a4f19b4322bc53962a25331a468cc2

SHA256
197b9662efaa2a22dbb1caee58cb9fdf6638cf4fb23e30dee94d230db20db6b1

SHA512
1a4f7cdf0be4eb504110e6433421098eaeeab4999316c01a9a1e60cc8653f5f4f6b49204370c218a8bb684aadaa3ddc74e7099a32e55f1b48c91d51e130cb172

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

Filesize
1.9MB

MD5
e1e4c49610b23ef02de1b8216886e428

SHA1
47ee2260f7a4f19b4322bc53962a25331a468cc2

SHA256
197b9662efaa2a22dbb1caee58cb9fdf6638cf4fb23e30dee94d230db20db6b1

SHA512
1a4f7cdf0be4eb504110e6433421098eaeeab4999316c01a9a1e60cc8653f5f4f6b49204370c218a8bb684aadaa3ddc74e7099a32e55f1b48c91d51e130cb172

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-330KR.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-330KR.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\reFJogN2kyVnt.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
1.9MB

MD5
e1e4c49610b23ef02de1b8216886e428

SHA1
47ee2260f7a4f19b4322bc53962a25331a468cc2

SHA256
197b9662efaa2a22dbb1caee58cb9fdf6638cf4fb23e30dee94d230db20db6b1

SHA512
1a4f7cdf0be4eb504110e6433421098eaeeab4999316c01a9a1e60cc8653f5f4f6b49204370c218a8bb684aadaa3ddc74e7099a32e55f1b48c91d51e130cb172

Download Submit
\Users\Admin\AppData\Local\Temp\is-330KR.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Local\Temp\is-59F5E.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-59F5E.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-59F5E.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\reFJogN2kyVnt.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/752-75-0x0000000000000000-mapping.dmp

Download
memory/836-70-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/836-82-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/836-85-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/836-71-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/836-73-0x0000000000400000-0x00000000013EA000-memory.dmp

Filesize
15.9MB

Download
memory/836-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/836-66-0x0000000000000000-mapping.dmp

Download
memory/1248-84-0x0000000000000000-mapping.dmp

Download
memory/1252-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1252-54-0x0000000075531000-0x0000000075533000-memory.dmp

Filesize
8KB

Download
memory/1252-86-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1252-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/2012-83-0x0000000000000000-mapping.dmp

Download
memory/2036-58-0x0000000000000000-mapping.dmp

Download
memory/2036-81-0x0000000003610000-0x00000000045FA000-memory.dmp

Filesize
15.9MB

Download
memory/2036-69-0x0000000003610000-0x00000000045FA000-memory.dmp

Filesize
15.9MB

Download