nymaim | e84603049889712ea21914657e3fcaa1b3af7b69183dba2d172ee168b5b74388

General

Target

file.exe
Size

1.5MB
MD5

eafd873d4799c4dc7cb389beb7f3aeb8
SHA1

d408f7730b0406e39287f816eb8c9eed6f855db9
SHA256

e84603049889712ea21914657e3fcaa1b3af7b69183dba2d172ee168b5b74388
SHA512

20437f94590c1a381697cb700a68085a4c72daf5ebb9dcf156d115d31466c4ef4884405e71f90d1b0cce5c6cd34a4ee36126d322919a0ca8fdf414b5c5f48d44
SSDEEP

24576:220Sx+C9CpwYIfL8cqzzrh89EFWy4rNkovKynT5A3Krl3fkhBeygXC75ld1qSVpk:228ICSYGvIzrwEEBrZTS6hvIBeWd1qai

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

C2

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
812	file.tmp
1988	MitFiles138.exe
4920	tilDAqt.exe

Loads dropped DLL 1 IoCs

pid	Process
812	file.tmp

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)\Mit Files\is-0LPV3.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-FOFGR.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-BK07V.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-T3UDC.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-0B2DC.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-LRMFV.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\language\is-IEP4J.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-LSFRG.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-PL7SV.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-6G2LA.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-70VA1.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-OAFV3.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\language\is-DFQIO.tmp	file.tmp
File created	C:\Program Files (x86)\Mit Files\is-82997.tmp	file.tmp

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1988	MitFiles138.exe
1988	MitFiles138.exe
1988	MitFiles138.exe
1988	MitFiles138.exe
1988	MitFiles138.exe
1988	MitFiles138.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1988	MitFiles138.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3364 wrote to memory of 812	3364	file.exe	80
PID 3364 wrote to memory of 812	3364	file.exe	80
PID 3364 wrote to memory of 812	3364	file.exe	80
PID 812 wrote to memory of 1988	812	file.tmp	81
PID 812 wrote to memory of 1988	812	file.tmp	81
PID 812 wrote to memory of 1988	812	file.tmp	81
PID 1988 wrote to memory of 4920	1988	MitFiles138.exe	82
PID 1988 wrote to memory of 4920	1988	MitFiles138.exe	82
PID 1988 wrote to memory of 4920	1988	MitFiles138.exe	82

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3364
- C:\Users\Admin\AppData\Local\Temp\is-4HDEL.tmp\file.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-4HDEL.tmp\file.tmp" /SL5="$1A0022,1311536,483328,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:812
- - C:\Program Files (x86)\Mit Files\MitFiles138.exe
    "C:\Program Files (x86)\Mit Files\MitFiles138.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of WriteProcessMemory
    PID:1988
  - - C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\tilDAqt.exe
      4⤵
      Executes dropped EXE
      PID:4920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
1.8MB

MD5
204d4dea13af9da4b9c432c7153ef321

SHA1
6f4ba3a03563988ff6566b64d39df878668dc68d

SHA256
26d35f618099170e905d3e711b553c004b2ef882d103ba664cae97120ac0fc7b

SHA512
e36e240d2d3fc16a37c327e313619fbfd0456fd85b4d2b61f222aa194aa520b93d534b9bb3139e1800d7691735bcb5bcc9509a5be7a3286cd72688c76ae8f5e5

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

Filesize
1.8MB

MD5
204d4dea13af9da4b9c432c7153ef321

SHA1
6f4ba3a03563988ff6566b64d39df878668dc68d

SHA256
26d35f618099170e905d3e711b553c004b2ef882d103ba664cae97120ac0fc7b

SHA512
e36e240d2d3fc16a37c327e313619fbfd0456fd85b4d2b61f222aa194aa520b93d534b9bb3139e1800d7691735bcb5bcc9509a5be7a3286cd72688c76ae8f5e5

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4HDEL.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-4HDEL.tmp\file.tmp

Filesize
695KB

MD5
415533bb40980951c966665cff9e2fe7

SHA1
fce396c8fa01876dd008f22c8be9a9b706f4aaec

SHA256
f688364bb17f03e53de641e7a0b0efefe30ac155fa9fa414a2150204ed9d3734

SHA512
3a8f88fa83e9f8be96fc9a0e8b47536455f50b1c511210d98fa178444b1e5ad1943cc3000e869f6dba4c782b48a3538d0b52d5e29ce3a692636aefc0e52083ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\is-PO2C2.tmp\_isetup\_iscrypt.dll

Filesize
2KB

MD5
a69559718ab506675e907fe49deb71e9

SHA1
bc8f404ffdb1960b50c12ff9413c893b56f2e36f

SHA256
2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc

SHA512
e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\tilDAqt.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
C:\Users\Admin\AppData\Roaming\{cd0d74c0-1ab4-11ed-b686-806e6f6e6963}\tilDAqt.exe

Filesize
72KB

MD5
3fb36cb0b7172e5298d2992d42984d06

SHA1
439827777df4a337cbb9fa4a4640d0d3fa1738b7

SHA256
27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6

SHA512
6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c

Download Submit
memory/1988-142-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1988-143-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/1988-147-0x0000000000400000-0x00000000013C2000-memory.dmp

Filesize
15.8MB

Download
memory/3364-132-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download
memory/3364-138-0x0000000000400000-0x000000000047D000-memory.dmp

Filesize
500KB

Download

Analysis

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