nymaim | f19aa537459ddc26363d40b8b62ba4983818cd6ab1eeabbda3e14e1d91f6d641

Analysis

max time kernel
57s
max time network
59s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
12-01-2023 17:03

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General

Target

file.exe
Size

1.7MB
MD5

a19ccd35e6e911c9917c3f6602e0c156
SHA1

ee10ffa8e272ce793e64f5754b180fb97be50b38
SHA256

f19aa537459ddc26363d40b8b62ba4983818cd6ab1eeabbda3e14e1d91f6d641
SHA512

4cc0a69610e8d155b74df71e29084f93c876457393645620da9509d61fd5153e4f932139f9d9a899b1b56d32fe757542f2f5d25b0a91e73460f6559e24b6fe6b
SSDEEP

49152:228jFlB0zG8uQcGkW1s0cHXrr96knh8d1qapk:Pgbu+lV6knKd1Zi

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.exexVcrlKmgh.exe

pid process

928 file.tmp
1544 MitFiles138.exe
1396 xVcrlKmgh.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpMitFiles138.exe

pid process

1940 file.exe
928 file.tmp
928 file.tmp
928 file.tmp
928 file.tmp
1544 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
928	file.tmp
1544	MitFiles138.exe
1396	xVcrlKmgh.exe

pid	process
1940	file.exe
928	file.tmp
928	file.tmp
928	file.tmp
928	file.tmp
1544	MitFiles138.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File opened for modification	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-GC2JN.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-PJ7P2.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-2TI3R.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-7JGF3.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-S20IH.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-8VB4V.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-0JHDN.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\is-SLA80.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-GNTUA.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-TG51M.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-9L583.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-F7M5F.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-CQJK2.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-G06PN.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

848 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

MitFiles138.exe

pid process

1544 MitFiles138.exe
1544 MitFiles138.exe
1544 MitFiles138.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 848 taskkill.exe

pid	process
848	taskkill.exe

pid	process
1544	MitFiles138.exe
1544	MitFiles138.exe
1544	MitFiles138.exe

description	pid	process
Token: SeDebugPrivilege	848	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpMitFiles138.execmd.exe

description	pid	process	target process
PID 1940 wrote to memory of 928	1940	file.exe	file.tmp
PID 1940 wrote to memory of 928	1940	file.exe	file.tmp
PID 1940 wrote to memory of 928	1940	file.exe	file.tmp
PID 1940 wrote to memory of 928	1940	file.exe	file.tmp
PID 1940 wrote to memory of 928	1940	file.exe	file.tmp
PID 1940 wrote to memory of 928	1940	file.exe	file.tmp
PID 1940 wrote to memory of 928	1940	file.exe	file.tmp
PID 928 wrote to memory of 1544	928	file.tmp	MitFiles138.exe
PID 928 wrote to memory of 1544	928	file.tmp	MitFiles138.exe
PID 928 wrote to memory of 1544	928	file.tmp	MitFiles138.exe
PID 928 wrote to memory of 1544	928	file.tmp	MitFiles138.exe
PID 1544 wrote to memory of 1396	1544	MitFiles138.exe	xVcrlKmgh.exe
PID 1544 wrote to memory of 1396	1544	MitFiles138.exe	xVcrlKmgh.exe
PID 1544 wrote to memory of 1396	1544	MitFiles138.exe	xVcrlKmgh.exe
PID 1544 wrote to memory of 1396	1544	MitFiles138.exe	xVcrlKmgh.exe
PID 1544 wrote to memory of 1328	1544	MitFiles138.exe	cmd.exe
PID 1544 wrote to memory of 1328	1544	MitFiles138.exe	cmd.exe
PID 1544 wrote to memory of 1328	1544	MitFiles138.exe	cmd.exe
PID 1544 wrote to memory of 1328	1544	MitFiles138.exe	cmd.exe
PID 1328 wrote to memory of 848	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 848	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 848	1328	cmd.exe	taskkill.exe
PID 1328 wrote to memory of 848	1328	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:1940
- C:\Users\Admin\AppData\Local\Temp\is-08TV9.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-08TV9.tmp\file.tmp" /SL5="$60122,1496307,483328,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:928
- - 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:1544
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\xVcrlKmgh.exe
      4⤵
      Executes dropped EXE
      PID:1396
  - - 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:1328
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "MitFiles138.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:848

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
2.0MB

MD5
b84dd76284563351d969b99aa75db8e2

SHA1
30d37c2eefa90cb69cadebb7cbde81b017d8ee4a

SHA256
5593d31100756c9f0bbaa28c3c10171aa29640142ffa07dbb77d599b43a2c08d

SHA512
ba9810949ec1a6a4940b3fd00cf6a8b9ba6b33e4a33604541449dedc1904b3b29d3460126c0310584f9ba046763afad6d8e337f2eb492af46184881ab709180d

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

Filesize
2.0MB

MD5
b84dd76284563351d969b99aa75db8e2

SHA1
30d37c2eefa90cb69cadebb7cbde81b017d8ee4a

SHA256
5593d31100756c9f0bbaa28c3c10171aa29640142ffa07dbb77d599b43a2c08d

SHA512
ba9810949ec1a6a4940b3fd00cf6a8b9ba6b33e4a33604541449dedc1904b3b29d3460126c0310584f9ba046763afad6d8e337f2eb492af46184881ab709180d

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-08TV9.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-08TV9.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}\xVcrlKmgh.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

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

Filesize
2.0MB

MD5
b84dd76284563351d969b99aa75db8e2

SHA1
30d37c2eefa90cb69cadebb7cbde81b017d8ee4a

SHA256
5593d31100756c9f0bbaa28c3c10171aa29640142ffa07dbb77d599b43a2c08d

SHA512
ba9810949ec1a6a4940b3fd00cf6a8b9ba6b33e4a33604541449dedc1904b3b29d3460126c0310584f9ba046763afad6d8e337f2eb492af46184881ab709180d

Download Submit
\Users\Admin\AppData\Local\Temp\is-08TV9.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

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

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

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

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-4SDOG.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}\xVcrlKmgh.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/848-84-0x0000000000000000-mapping.dmp

Download
memory/928-81-0x00000000035E0000-0x00000000045D4000-memory.dmp

Filesize
16.0MB

Download
memory/928-58-0x0000000000000000-mapping.dmp

Download
memory/928-69-0x00000000035E0000-0x00000000045D4000-memory.dmp

Filesize
16.0MB

Download
memory/1328-83-0x0000000000000000-mapping.dmp

Download
memory/1396-75-0x0000000000000000-mapping.dmp

Download
memory/1544-66-0x0000000000000000-mapping.dmp

Download
memory/1544-73-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1544-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/1544-82-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1544-71-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1544-70-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1544-85-0x0000000000400000-0x00000000013F4000-memory.dmp

Filesize
16.0MB

Download
memory/1940-68-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1940-54-0x0000000075DF1000-0x0000000075DF3000-memory.dmp

Filesize
8KB

Download
memory/1940-86-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/1940-55-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download