nymaim | f0b800790d1a4184a24d5a562c0a762dab1907c098e50581fbda3f7ab51714e5

Analysis

max time kernel
58s
max time network
61s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
11-01-2023 19:46

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General

Target

file.exe
Size

1.3MB
MD5

c024b51ebbf15dc7b9941024b46a5a3c
SHA1

0d2e1e2329b260a3d7b42d095d9efb6cc9c849a5
SHA256

f0b800790d1a4184a24d5a562c0a762dab1907c098e50581fbda3f7ab51714e5
SHA512

186a2596ac62a222cad713a925f66e250c5f381cffc5ba4e3ca19b75b3774ce25e38cf6c97ebbcd049454d8fb2b34fd0c1651ba5f0f383803014a8de014e8204
SSDEEP

24576:q20IUAyFDO8sF4D8BV+UKxrxi3NAcI2ycWT697ILYgXC75ld1qSVpk:q2cFi8sioBIvl2TcHId1qapk

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.tmpLitFiles137.exeSQ4L1KXm.exe

pid process

1376 file.tmp
904 LitFiles137.exe
432 SQ4L1KXm.exe
Loads dropped DLL 6 IoCs

Processes:

file.exefile.tmpLitFiles137.exe

pid process

996 file.exe
1376 file.tmp
1376 file.tmp
1376 file.tmp
1376 file.tmp
904 LitFiles137.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
1376	file.tmp
904	LitFiles137.exe
432	SQ4L1KXm.exe

pid	process
996	file.exe
1376	file.tmp
1376	file.tmp
1376	file.tmp
1376	file.tmp
904	LitFiles137.exe

Drops file in Program Files directory 17 IoCs

Processes:

file.tmp

description	ioc	process
File created	C:\Program Files (x86)\Split Files\language\is-7ADUO.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-UJ7KV.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-SP57C.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\unins000.dat	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-UOKI1.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-VMN7G.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\LitFiles137.exe	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-3DJIP.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-TP4F0.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-H3OMG.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-EP754.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-8VO4L.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\language\is-JGU1P.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-R5JN1.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-5LMU0.tmp	file.tmp
File created	C:\Program Files (x86)\Split Files\is-LQ6V4.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

1828 taskkill.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

LitFiles137.exe

pid process

904 LitFiles137.exe
904 LitFiles137.exe
904 LitFiles137.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

taskkill.exe

description pid process

Token: SeDebugPrivilege 1828 taskkill.exe

pid	process
1828	taskkill.exe

pid	process
904	LitFiles137.exe
904	LitFiles137.exe
904	LitFiles137.exe

description	pid	process
Token: SeDebugPrivilege	1828	taskkill.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

file.exefile.tmpLitFiles137.execmd.exe

description	pid	process	target process
PID 996 wrote to memory of 1376	996	file.exe	file.tmp
PID 996 wrote to memory of 1376	996	file.exe	file.tmp
PID 996 wrote to memory of 1376	996	file.exe	file.tmp
PID 996 wrote to memory of 1376	996	file.exe	file.tmp
PID 996 wrote to memory of 1376	996	file.exe	file.tmp
PID 996 wrote to memory of 1376	996	file.exe	file.tmp
PID 996 wrote to memory of 1376	996	file.exe	file.tmp
PID 1376 wrote to memory of 904	1376	file.tmp	LitFiles137.exe
PID 1376 wrote to memory of 904	1376	file.tmp	LitFiles137.exe
PID 1376 wrote to memory of 904	1376	file.tmp	LitFiles137.exe
PID 1376 wrote to memory of 904	1376	file.tmp	LitFiles137.exe
PID 904 wrote to memory of 432	904	LitFiles137.exe	SQ4L1KXm.exe
PID 904 wrote to memory of 432	904	LitFiles137.exe	SQ4L1KXm.exe
PID 904 wrote to memory of 432	904	LitFiles137.exe	SQ4L1KXm.exe
PID 904 wrote to memory of 432	904	LitFiles137.exe	SQ4L1KXm.exe
PID 904 wrote to memory of 1948	904	LitFiles137.exe	cmd.exe
PID 904 wrote to memory of 1948	904	LitFiles137.exe	cmd.exe
PID 904 wrote to memory of 1948	904	LitFiles137.exe	cmd.exe
PID 904 wrote to memory of 1948	904	LitFiles137.exe	cmd.exe
PID 1948 wrote to memory of 1828	1948	cmd.exe	taskkill.exe
PID 1948 wrote to memory of 1828	1948	cmd.exe	taskkill.exe
PID 1948 wrote to memory of 1828	1948	cmd.exe	taskkill.exe
PID 1948 wrote to memory of 1828	1948	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:996
- C:\Users\Admin\AppData\Local\Temp\is-S5TU1.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-S5TU1.tmp\file.tmp" /SL5="$70124,1070820,212992,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:1376
- - C:\Program Files (x86)\Split Files\LitFiles137.exe
    "C:\Program Files (x86)\Split Files\LitFiles137.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:904
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SQ4L1KXm.exe
      4⤵
      Executes dropped EXE
      PID:432
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "LitFiles137.exe" /f & erase "C:\Program Files (x86)\Split Files\LitFiles137.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1948
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "LitFiles137.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:1828

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\LitFiles137.exe

Filesize
1.8MB

MD5
a535f4b04c81b94b90b7ed5a667665ec

SHA1
2b61a4767a0d4b61b9c27741970607853ed76e2d

SHA256
0ca01446e83d7c4cda9066a344d7af2660d9f3eded264ea3a32ac2a7d6e89287

SHA512
fd0b1cdd50410f397ec29574cefa392bcc9eeb30ab490f62237771ad6b921ff1163a99cc880ffce805c36efa00610db24b4a6945a9f1309c714da1bcaf7e3d6c

Download Submit
C:\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
a535f4b04c81b94b90b7ed5a667665ec

SHA1
2b61a4767a0d4b61b9c27741970607853ed76e2d

SHA256
0ca01446e83d7c4cda9066a344d7af2660d9f3eded264ea3a32ac2a7d6e89287

SHA512
fd0b1cdd50410f397ec29574cefa392bcc9eeb30ab490f62237771ad6b921ff1163a99cc880ffce805c36efa00610db24b4a6945a9f1309c714da1bcaf7e3d6c

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S5TU1.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-S5TU1.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}\SQ4L1KXm.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
\Program Files (x86)\Split Files\LitFiles137.exe

Filesize
1.8MB

MD5
a535f4b04c81b94b90b7ed5a667665ec

SHA1
2b61a4767a0d4b61b9c27741970607853ed76e2d

SHA256
0ca01446e83d7c4cda9066a344d7af2660d9f3eded264ea3a32ac2a7d6e89287

SHA512
fd0b1cdd50410f397ec29574cefa392bcc9eeb30ab490f62237771ad6b921ff1163a99cc880ffce805c36efa00610db24b4a6945a9f1309c714da1bcaf7e3d6c

Download Submit
\Users\Admin\AppData\Local\Temp\is-B5J9Q.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
\Users\Admin\AppData\Local\Temp\is-B5J9Q.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-B5J9Q.tmp\_isetup\_shfoldr.dll

Filesize
22KB

MD5
92dc6ef532fbb4a5c3201469a5b5eb63

SHA1
3e89ff837147c16b4e41c30d6c796374e0b8e62c

SHA256
9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87

SHA512
9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3

Download Submit
\Users\Admin\AppData\Local\Temp\is-S5TU1.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\SQ4L1KXm.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/432-75-0x0000000000000000-mapping.dmp

Download
memory/904-70-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/904-86-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/904-71-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/904-73-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/904-66-0x0000000000000000-mapping.dmp

Download
memory/904-77-0x0000000010000000-0x000000001001B000-memory.dmp

Filesize
108KB

Download
memory/904-82-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/904-83-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/996-54-0x00000000757A1000-0x00000000757A3000-memory.dmp

Filesize
8KB

Download
memory/996-68-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/996-55-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/996-87-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/1376-81-0x00000000035B0000-0x0000000004572000-memory.dmp

Filesize
15.8MB

Download
memory/1376-69-0x00000000035B0000-0x0000000004572000-memory.dmp

Filesize
15.8MB

Download
memory/1376-58-0x0000000000000000-mapping.dmp

Download
memory/1828-85-0x0000000000000000-mapping.dmp

Download
memory/1948-84-0x0000000000000000-mapping.dmp

Download